Inner Pie on Concentric Pie Chart Not Full Circle

[Randy Merrill]

I am trying to make a concentric pie chart as seen here:

http://jsfiddle.net/Zoramite/VDZnL/

My goal is to have the center circle show different sections and have the outer circle show the subsection information that matches up with the sections.

So in this example the inner chart colors should match up with the outer chart values of the same color.

I tried using 0s for the values of 5-9, which made the inner circle full, but then it had parts of the inner pie for each of the 5-9 pieces. (http://jsfiddle.net/Zoramite/VDZnL/5/)

Is there a reason why my inner circle is only going about a quarter of the way around the chart? Am I missing something?

Thanks!