Resizing header row in GroupingGrid

How does one resize the header row in a grouping grid? I have a couple of header columns that I want to show as multiline. I set the GridColumnDescriptor.Appearance.AnyHeaderCell.WrapText to true and I now have wrapped text. That''s good. However, it''s clipped at the top and bottom just slightly. I was hoping the call to Grid.TableControl.Model.RowHeights.ResizeToFit with IncludeHeaders to get some more padding, but it didn''t work. What am I mising?

You can explicitly set the row height using this.gridGroupingControl1.TableOptions.ColumnHeaderRowHeight = 38;