diff --git a/KCC.ui b/KCC.ui
index dc97e1a..6a27a95 100644
--- a/KCC.ui
+++ b/KCC.ui
@@ -7,19 +7,19 @@
     <x>0</x>
     <y>0</y>
     <width>420</width>
-    <height>345</height>
+    <height>380</height>
    </rect>
   </property>
   <property name="minimumSize">
    <size>
     <width>420</width>
-    <height>345</height>
+    <height>380</height>
    </size>
   </property>
   <property name="maximumSize">
    <size>
     <width>420</width>
-    <height>345</height>
+    <height>380</height>
    </size>
   </property>
   <property name="font">
@@ -426,9 +426,6 @@
     </property>
    </widget>
    <widget class="QPushButton" name="ExpertModeButton">
-    <property name="enabled">
-     <bool>false</bool>
-    </property>
     <property name="geometry">
      <rect>
       <x>260</x>
@@ -492,7 +489,7 @@
       </rect>
      </property>
      <property name="focusPolicy">
-      <enum>Qt::NoFocus</enum>
+      <enum>Qt::ClickFocus</enum>
      </property>
      <property name="toolTip">
       <string>&lt;html&gt;&lt;head/&gt;&lt;body&gt;&lt;p&gt;When converting color images setting this option to 1.0 &lt;span style=&quot; font-weight:600;&quot;&gt;might&lt;/span&gt; improve readability.&lt;/p&gt;&lt;/body&gt;&lt;/html&gt;</string>
@@ -507,6 +504,86 @@
       <enum>Qt::Horizontal</enum>
      </property>
     </widget>
+    <zorder>GammaLabel</zorder>
+    <zorder>GammaSlider</zorder>
+    <zorder>OptionsExpert</zorder>
+    <zorder>OptionsExpert</zorder>
+   </widget>
+   <widget class="QFrame" name="OptionsExpert">
+    <property name="geometry">
+     <rect>
+      <x>20</x>
+      <y>340</y>
+      <width>381</width>
+      <height>40</height>
+     </rect>
+    </property>
+    <property name="frameShape">
+     <enum>QFrame::StyledPanel</enum>
+    </property>
+    <property name="frameShadow">
+     <enum>QFrame::Raised</enum>
+    </property>
+    <layout class="QGridLayout" name="gridLayout_2">
+     <item row="0" column="0">
+      <widget class="QLabel" name="wLabel">
+       <property name="toolTip">
+        <string>Device profile width will be overwritten by this value.</string>
+       </property>
+       <property name="text">
+        <string>Custom width: </string>
+       </property>
+      </widget>
+     </item>
+     <item row="0" column="1">
+      <widget class="QLineEdit" name="customWidth">
+       <property name="focusPolicy">
+        <enum>Qt::ClickFocus</enum>
+       </property>
+       <property name="acceptDrops">
+        <bool>false</bool>
+       </property>
+       <property name="toolTip">
+        <string>Device profile width will be overwritten by this value.</string>
+       </property>
+       <property name="inputMask">
+        <string>0000; </string>
+       </property>
+       <property name="maxLength">
+        <number>4</number>
+       </property>
+      </widget>
+     </item>
+     <item row="0" column="2">
+      <widget class="QLabel" name="hLabel">
+       <property name="toolTip">
+        <string>Device profile height will be overwritten by this value.</string>
+       </property>
+       <property name="text">
+        <string>Custom height: </string>
+       </property>
+      </widget>
+     </item>
+     <item row="0" column="3">
+      <widget class="QLineEdit" name="customHeight">
+       <property name="focusPolicy">
+        <enum>Qt::ClickFocus</enum>
+       </property>
+       <property name="acceptDrops">
+        <bool>false</bool>
+       </property>
+       <property name="toolTip">
+        <string>Device profile height will be overwritten by this value.</string>
+       </property>
+       <property name="inputMask">
+        <string>0000; </string>
+       </property>
+       <property name="maxLength">
+        <number>4</number>
+       </property>
+      </widget>
+     </item>
+    </layout>
    </widget>
   </widget>
   <action name="ActionBasic">
diff --git a/kcc/KCC_gui.py b/kcc/KCC_gui.py
index 23979cd..06d574c 100644
--- a/kcc/KCC_gui.py
+++ b/kcc/KCC_gui.py
@@ -36,8 +36,8 @@ from PyQt4 import QtGui, QtCore
 # noinspection PyBroadException
 class Ui_KCC(object):
     def selectDir(self):
-        if self.firstStart:
-            self.firstStart = False
+        if self.needClean:
+            self.needClean = False
             GUI.JobList.clear()
         dname = QtGui.QFileDialog.getExistingDirectory(MainWindow, 'Select directory', '')
         # Lame UTF-8 security measure
@@ -51,8 +51,8 @@ class Ui_KCC(object):
         self.clearEmptyJobs()
 
     def selectFile(self):
-        if self.firstStart:
-            self.firstStart = False
+        if self.needClean:
+            self.needClean = False
             GUI.JobList.clear()
         if self.UnRAR:
             fname = QtGui.QFileDialog.getOpenFileName(MainWindow, 'Select file', '', '*.cbz *.cbr *.zip *.rar *.pdf')
@@ -87,6 +87,7 @@ class Ui_KCC(object):
         GUI.FormatBox.setEnabled(False)
         GUI.OptionsAdvanced.setEnabled(False)
         GUI.OptionsAdvancedGamma.setEnabled(False)
+        GUI.OptionsExpert.setEnabled(False)
         GUI.ProcessingBox.hide()
         GUI.UpscaleBox.hide()
         GUI.NoRotateBox.hide()
@@ -97,6 +98,8 @@ class Ui_KCC(object):
         GUI.StretchBox.setChecked(False)
         GUI.NoDitheringBox.setChecked(False)
         GUI.GammaSlider.setValue(0)
+        GUI.customWidth.setText('')
+        GUI.customHeight.setText('')
 
     def modeAdvanced(self):
         MainWindow.setMinimumSize(QtCore.QSize(420, 345))
@@ -111,10 +114,19 @@ class Ui_KCC(object):
         GUI.NoRotateBox.show()
         GUI.OptionsAdvancedGamma.setEnabled(True)
         GUI.OptionsAdvanced.setEnabled(True)
+        GUI.OptionsExpert.setEnabled(False)
+        GUI.customWidth.setText('')
+        GUI.customHeight.setText('')
 
     def modeExpert(self):
-        #TODO
-        pass
+        self.modeAdvanced()
+        MainWindow.setMinimumSize(QtCore.QSize(420, 380))
+        MainWindow.setMaximumSize(QtCore.QSize(420, 380))
+        MainWindow.resize(420, 380)
+        GUI.BasicModeButton.setStyleSheet('font-weight:Normal;')
+        GUI.AdvModeButton.setStyleSheet('font-weight:Normal;')
+        GUI.ExpertModeButton.setStyleSheet('font-weight:Bold;')
+        GUI.OptionsExpert.setEnabled(True)
 
     def modeConvert(self, enable):
         GUI.BasicModeButton.setEnabled(enable)
@@ -150,12 +162,12 @@ class Ui_KCC(object):
         MainWindow.repaint()
 
     def convertStart(self):
-        if self.firstStart:
-            self.firstStart = False
+        if self.needClean:
+            self.needClean = False
             GUI.JobList.clear()
         if GUI.JobList.count() == 0:
             self.addMessage('No files selected! Please choose files to convert.', self.errorIcon)
-            self.firstStart = True
+            self.needClean = True
             return
         self.modeConvert(False)
         profile = ProfileData.ProfileLabels[str(GUI.DeviceBox.currentText())]
@@ -248,7 +260,7 @@ class Ui_KCC(object):
                         os.remove(outputPath)
                         self.addMessage('Created EPUB file is too big for KindleGen!', self.errorIcon)
                         self.addMessage('Try converting smaller batch.', self.errorIcon)
-        self.firstStart = True
+        self.needClean = True
         self.addMessage('All jobs completed.', self.warningIcon)
         self.modeConvert(True)
 
@@ -259,7 +271,7 @@ class Ui_KCC(object):
         profiles = sorted(ProfileData.ProfileLabels.iterkeys())
         kindleIcon = QtGui.QIcon()
         kindleIcon.addPixmap(QtGui.QPixmap(":/Devices/icons/Kindle.ico"), QtGui.QIcon.Normal, QtGui.QIcon.Off)
-        self.firstStart = True
+        self.needClean = True
         self.GammaValue = 0
         self.infoIcon = QtGui.QIcon()
         self.infoIcon.addPixmap(QtGui.QPixmap(":/Status/icons/info.ico"), QtGui.QIcon.Normal, QtGui.QIcon.Off)
diff --git a/kcc/KCC_ui.py b/kcc/KCC_ui.py
index abf4fac..bfa9862 100644
--- a/kcc/KCC_ui.py
+++ b/kcc/KCC_ui.py
@@ -2,7 +2,7 @@
 
 # Form implementation generated from reading ui file 'KCC.ui'
 #
-# Created: Mon Jun 10 17:51:15 2013
+# Created: Mon Jun 10 20:06:36 2013
 #      by: PyQt4 UI code generator 4.10.1
 #
 # WARNING! All changes made in this file will be lost!
@@ -26,9 +26,9 @@ except AttributeError:
 class Ui_KCC(object):
     def setupUi(self, KCC):
         KCC.setObjectName(_fromUtf8("KCC"))
-        KCC.resize(420, 345)
-        KCC.setMinimumSize(QtCore.QSize(420, 345))
-        KCC.setMaximumSize(QtCore.QSize(420, 345))
+        KCC.resize(420, 380)
+        KCC.setMinimumSize(QtCore.QSize(420, 380))
+        KCC.setMaximumSize(QtCore.QSize(420, 380))
         font = QtGui.QFont()
         font.setPointSize(9)
         KCC.setFont(font)
@@ -167,7 +167,6 @@ class Ui_KCC(object):
         self.AdvModeButton.setFocusPolicy(QtCore.Qt.NoFocus)
         self.AdvModeButton.setObjectName(_fromUtf8("AdvModeButton"))
         self.ExpertModeButton = QtGui.QPushButton(self.Form)
-        self.ExpertModeButton.setEnabled(False)
         self.ExpertModeButton.setGeometry(QtCore.QRect(260, 10, 151, 32))
         font = QtGui.QFont()
         font.setPointSize(9)
@@ -186,11 +185,36 @@ class Ui_KCC(object):
         self.GammaLabel.setObjectName(_fromUtf8("GammaLabel"))
         self.GammaSlider = QtGui.QSlider(self.OptionsAdvancedGamma)
         self.GammaSlider.setGeometry(QtCore.QRect(140, 10, 261, 22))
-        self.GammaSlider.setFocusPolicy(QtCore.Qt.NoFocus)
+        self.GammaSlider.setFocusPolicy(QtCore.Qt.ClickFocus)
         self.GammaSlider.setMaximum(500)
         self.GammaSlider.setSingleStep(5)
         self.GammaSlider.setOrientation(QtCore.Qt.Horizontal)
         self.GammaSlider.setObjectName(_fromUtf8("GammaSlider"))
+        self.OptionsExpert = QtGui.QFrame(self.Form)
+        self.OptionsExpert.setGeometry(QtCore.QRect(20, 340, 381, 40))
+        self.OptionsExpert.setFrameShape(QtGui.QFrame.StyledPanel)
+        self.OptionsExpert.setFrameShadow(QtGui.QFrame.Raised)
+        self.OptionsExpert.setObjectName(_fromUtf8("OptionsExpert"))
+        self.gridLayout_2 = QtGui.QGridLayout(self.OptionsExpert)
+        self.gridLayout_2.setObjectName(_fromUtf8("gridLayout_2"))
+        self.wLabel = QtGui.QLabel(self.OptionsExpert)
+        self.wLabel.setObjectName(_fromUtf8("wLabel"))
+        self.gridLayout_2.addWidget(self.wLabel, 0, 0, 1, 1)
+        self.customWidth = QtGui.QLineEdit(self.OptionsExpert)
+        self.customWidth.setFocusPolicy(QtCore.Qt.ClickFocus)
+        self.customWidth.setAcceptDrops(False)
+        self.customWidth.setMaxLength(4)
+        self.customWidth.setObjectName(_fromUtf8("customWidth"))
+        self.gridLayout_2.addWidget(self.customWidth, 0, 1, 1, 1)
+        self.hLabel = QtGui.QLabel(self.OptionsExpert)
+        self.hLabel.setObjectName(_fromUtf8("hLabel"))
+        self.gridLayout_2.addWidget(self.hLabel, 0, 2, 1, 1)
+        self.customHeight = QtGui.QLineEdit(self.OptionsExpert)
+        self.customHeight.setFocusPolicy(QtCore.Qt.ClickFocus)
+        self.customHeight.setAcceptDrops(False)
+        self.customHeight.setMaxLength(4)
+        self.customHeight.setObjectName(_fromUtf8("customHeight"))
+        self.gridLayout_2.addWidget(self.customHeight, 0, 3, 1, 1)
         KCC.setCentralWidget(self.Form)
         self.ActionBasic = QtGui.QAction(KCC)
         self.ActionBasic.setCheckable(True)
@@ -241,6 +265,14 @@ class Ui_KCC(object):
         self.GammaLabel.setToolTip(_translate("KCC", "When converting color images setting this option to 1.0 MIGHT improve readability.", None))
         self.GammaLabel.setText(_translate("KCC", "Gamma correction: Auto", None))
         self.GammaSlider.setToolTip(_translate("KCC", "<html><head/><body><p>When converting color images setting this option to 1.0 <span style=\" font-weight:600;\">might</span> improve readability.</p></body></html>", None))
+        self.wLabel.setToolTip(_translate("KCC", "Device profile width will be overwritten by this value.", None))
+        self.wLabel.setText(_translate("KCC", "Custom width: ", None))
+        self.customWidth.setToolTip(_translate("KCC", "Device profile width will be overwritten by this value.", None))
+        self.customWidth.setInputMask(_translate("KCC", "0000; ", None))
+        self.hLabel.setToolTip(_translate("KCC", "Device profile height will be overwritten by this value.", None))
+        self.hLabel.setText(_translate("KCC", "Custom height: ", None))
+        self.customHeight.setToolTip(_translate("KCC", "Device profile height will be overwritten by this value.", None))
+        self.customHeight.setInputMask(_translate("KCC", "0000; ", None))
         self.ActionBasic.setText(_translate("KCC", "Basic", None))
         self.ActionAdvanced.setText(_translate("KCC", "Advanced", None))