Thanks for the tip on the label format. I must have added that in one day testing out what I could do and never took it out.
About the problem with setting the Axis values, here's what I'm running up against. When I do as you suggested, RadChart1 has a MaxValue of 3, which gets properly applied to RadChart2. The weird thing is that when the chart actually displays on the screen, the MaxValue is 1.6. I thought I was going a bit nuts so I threw in some breakpoints and a timer. What I did was compared the values of RadChart1's Max, Min, and Step values (3, 0, and 1 respectively) right after setting the ItemSource, and then when the timer (set at a 20 sec interval) ticked 20 seconds later. I was amazed to see that the max value had changed to 1.59999999999 and the step value to 0.2 at somepoint during the process.
I'm guessing that by setting the values right after setting the item source, the chart hasn't had enough time to render the new axis values and I'm getting the defaults and not the correctly rendered values.
I'm going to try some workarounds and see what I get.