diff --git a/freecad/kiconnect/resources/ui/preferences.ui b/freecad/kiconnect/resources/ui/preferences.ui
index bc67141..144a26b 100644
--- a/freecad/kiconnect/resources/ui/preferences.ui
+++ b/freecad/kiconnect/resources/ui/preferences.ui
@@ -7,7 +7,7 @@
     <x>0</x>
     <y>0</y>
     <width>1151</width>
-    <height>591</height>
+    <height>663</height>
    </rect>
   </property>
   <property name="maximumSize">
@@ -32,6 +32,9 @@
       <bool>false</bool>
      </property>
      <layout class="QVBoxLayout" name="verticalLayout_5">
+      <property name="sizeConstraint">
+       <enum>QLayout::SizeConstraint::SetDefaultConstraint</enum>
+      </property>
       <item>
        <layout class="QHBoxLayout" name="horizontalLayout">
         <item>
@@ -42,15 +45,15 @@
          </widget>
         </item>
         <item>
-         <widget class="Gui::PrefDoubleSpinBox" name="doubleSpinBox">
-          <property name="singleStep">
-           <double>0.100000000000000</double>
+         <widget class="Gui::PrefUnitSpinBox" name="spin_thickness">
+          <property name="unit" stdset="0">
+           <string>mm</string>
           </property>
           <property name="value">
            <double>1.600000000000000</double>
           </property>
           <property name="prefEntry" stdset="0">
-           <cstring>board_thickness</cstring>
+           <cstring>default_thickness</cstring>
           </property>
           <property name="prefPath" stdset="0">
            <cstring>Mod/KiConnect</cstring>
@@ -60,18 +63,18 @@
        </layout>
       </item>
       <item>
-       <widget class="Gui::PrefCheckBox" name="checkBox">
+       <widget class="Gui::PrefCheckBox" name="check_load_parts">
         <property name="text">
-         <string> Preferences from toolbar</string>
+         <string>Load Parts</string>
         </property>
         <property name="checked">
          <bool>true</bool>
         </property>
         <property name="prefEntry" stdset="0">
-         <cstring>Mod/KiConnect</cstring>
+         <cstring>parts_load</cstring>
         </property>
         <property name="prefPath" stdset="0">
-         <cstring>prefs_toolbar</cstring>
+         <cstring>Mod/KiConnect</cstring>
         </property>
        </widget>
       </item>
@@ -84,7 +87,7 @@
       <string>Debug and Development</string>
      </property>
      <property name="alignment">
-      <set>Qt::AlignmentFlag::AlignCenter</set>
+      <set>Qt::AlignmentFlag::AlignHCenter|Qt::AlignmentFlag::AlignTop</set>
      </property>
      <property name="checkable">
       <bool>false</bool>
@@ -112,20 +115,41 @@
         </property>
        </widget>
       </item>
+      <item>
+       <widget class="Gui::PrefCheckBox" name="checkBox">
+        <property name="text">
+         <string> Preferences from toolbar</string>
+        </property>
+        <property name="checked">
+         <bool>true</bool>
+        </property>
+        <property name="prefEntry" stdset="0">
+         <cstring>Mod/KiConnect</cstring>
+        </property>
+        <property name="prefPath" stdset="0">
+         <cstring>prefs_toolbar</cstring>
+        </property>
+       </widget>
+      </item>
      </layout>
     </widget>
    </item>
   </layout>
  </widget>
  <customwidgets>
+  <customwidget>
+   <class>Gui::QuantitySpinBox</class>
+   <extends>QAbstractSpinBox</extends>
+   <header>Gui/QuantitySpinBox.h</header>
+  </customwidget>
   <customwidget>
    <class>Gui::PrefCheckBox</class>
    <extends>QCheckBox</extends>
    <header>Gui/PrefWidgets.h</header>
   </customwidget>
   <customwidget>
-   <class>Gui::PrefDoubleSpinBox</class>
-   <extends>QDoubleSpinBox</extends>
+   <class>Gui::PrefUnitSpinBox</class>
+   <extends>Gui::QuantitySpinBox</extends>
    <header>Gui/PrefWidgets.h</header>
   </customwidget>
  </customwidgets>