I have a combo chart that is showing stacked bar data by month and then overlays two line graphs.  All seems to be working just fine, except that I've been asked to list columns for months that don't have any data.  E.g. show all months January-December even if only March, April, May, and July have data so far. 

I've tried in vain to get this to work.  I managed to move the bars and add empty column spaces to the chart (using range -3 to 9) and I've managed to append the trailing month labels using C# and "scale.Labels.Add()" where scale is an  NScaleConfigurator object.  But I can't get labels into the preceding or intervening spaces where there is nothing reported (i.e., January, February, June).  Is there any way to do this (presumably in C#).  It seems that, once the chart is rendered, it is not possible to alter the label positions relative to the rendered data.