I am having a problem formatting a chart in Excel 2010. My chart has multi-level category axis labels, and I would like to have a vertical grid line separating each major group of categories. In Excel 2003, I could right-click on one of the gridlines and then specify the spacing I wanted between gridlines. In Excel 2010, as soon as I indicate that I want multi-level category axis labels, I get a vertical gridline between each category and I am unable to alter the spacing. If I deselect the multi-level axis label option, I can adjust the spacing between the vertical gridlines, but the axis multi-level label functionality is lost. Is there a way to fix this problem without having to resort to using the drawing tools or text boxes to achieve the desired results.