Customizing groups height in Infragistics Gallery Tool

I'm using Infragistics NetAdvantage for Win Client 2010 Vol. 3.

I added a PopupGalleryTool to a ribbon: the tool's Preferred Size property is set to Large, and the gallery shows a list of 24x24 icons , grouped by category.

What I'开发者_StackOverflowm looking for is: how can I customize groups height? I noticed that when Preferred Size is set to Normal, groups are smaller. I would like to have a smaller height also with "Large" Preferred Size. Is it possible?

Here is a screenshot:

The difference in heights actually seems like a bug. You should probably submit it to Infragistics support: http://www.infragistics.com/support/submitrequest.aspx

Currently, the only way to control the height of the group header is to change the font size. This can be done by setting the PopupGalleryTool.GroupSettings.HeaderAppearance.FontData.SizeInPoints to a custom value.