Combination bar and line problem
 

I've created a set of combination bar and line charts as in Jon
Peltier's example using x-y and a dummy series. I've got pretty good
at this until today. I noticed that if I increase the size of the font
on the x-axis (left hand side, up and down since this is a bar chart)
numbers will suddenly appear on the axis in addition to the categories.
The numbers are exactly .5 off of the dummy values. If I reduce the
size to 10pt, the numbers go away.

Where are these coming from and how can I prevent them from showing up?
Thanks

- John