I have added an UltraGridContol to an Aspx file like so:

<igtbl:UltraWebGrid ID="ShiftSequenceGrid" runat="server" Width="100%">
    <Bands>
        <igtbl:UltraGridBand>
            <AddNewRow View="NotSet" Visible="NotSet">
            </AddNewRow>
            <FixedCellStyle HorizontalAlign="center" VerticalAlign="Middle" Wrap="true" Height="25px" >
            <Padding Bottom="4px" Left="4px" Top="4px" Right="4px" />
            </FixedCellStyle>
        </igtbl:UltraGridBand>
    </Bands>
    <DisplayLayout BorderCollapseDefault="Separate" Name="ShiftSequenceGrid" CellClickActionDefault="NotSet"
        AllowUpdateDefault="No" RowSelectorsDefault="No" Version="4.00" TabDirection="BottomToTop"
        ColWidthDefault="160px" RowHeightDefault="25px" TableLayout="Fixed" ScrollBar="Auto" ScrollBarView="Both">
        <HeaderStyleDefault Wrap="True" ForeColor="white" BackColor="#89a3c8" BorderColor="#5e7ba5"
            BorderStyle="Solid" BorderWidth="1px" Font-Size="11px" >
            <BorderDetails ColorLeft="#89a3c8" ColorTop="#89a3c8" />
            <Padding Top="2" Bottom="2" />
        </HeaderStyleDefault>
        <EditCellStyleDefault BackColor="#89a3c8" BorderStyle="None" BorderWidth="0" Height="25px" Width="160px">
            <Padding Bottom="4px" Left="4px" Top="4px" Right="4px" />
        </EditCellStyleDefault>
        <RowStyleDefault BorderColor="#a1b1c8" BorderStyle="Solid" BorderWidth="1px">
            <BorderDetails ColorLeft="White" ColorTop="White" />
            <Padding Top="4px" Bottom="4px" Left="4px" Right="4px" />
        </RowStyleDefault>
        <FrameStyle Width="100%" BorderColor="steelblue" BorderStyle="Solid" BorderWidth="1px" Wrap="true">
        </FrameStyle>
        <ClientSideEvents MouseDownHandler="ShiftSequenceGrid_MouseDownHandler" />
    </DisplayLayout>
</igtbl:UltraWebGrid>

On setting fixed headers to true, setting the first column not to scroll, and the top heading not to scroll like so:

ShiftSequenceGrid.DisplayLayout.UseFixedHeaders = true;
ShiftSequenceGrid.DisplayLayout.Bands[0].Columns[0].Header.Fixed = true;
ShiftSequenceGrid.DisplayLayout.StationaryMargins = StationaryMargins.Header;

What I get is the correct columns scrolling, but the last 1.5 columns are out of the range of the scrollbar.  I have followed instructions in a number of similar post but none have allowed the offending columns to become scrollable.

Is ther something I am missing here?