- created a new custom layout based on the Grid Layout where I can set the horizontal and vertical spacings between grid items and used it throughout the app

appGUI/preferences/tools/ToolsNCCPrefGroupUI.py

@@ -1,6 +1,7 @@
 from PyQt6 import QtWidgets
 
-from appGUI.GUIElements import RadioSet, FCDoubleSpinner, FCCheckBox, NumericalEvalTupleEntry, FCComboBox2, FCLabel
+from appGUI.GUIElements import RadioSet, FCDoubleSpinner, FCCheckBox, NumericalEvalTupleEntry, FCComboBox2, FCLabel, \
+    FCGridLayout
 from appGUI.preferences.OptionsGroupUI import OptionsGroupUI
 
 import gettext
@@ -28,7 +29,7 @@ class ToolsNCCPrefGroupUI(OptionsGroupUI):
         )
         self.layout.addWidget(self.clearcopper_label)
 
-        grid0 = QtWidgets.QGridLayout()
+        grid0 = FCGridLayout(v_spacing=3)
         self.layout.addLayout(grid0)
 
         ncctdlabel = FCLabel('<b><font color="green">%s:</font></b>' % _('Tools Dia'))