For those who are using interrupts and don't like the jittery PWM outputs on channels 13 through 16, I've written replacement code for IFI's Generate_Pwms() function that uses the built-in CCP hardware to generate super accurate PWM pulses. The code also allows you to set the neutral point and gain for each output channel, giving you complete control of your servos and motors. As an example, this code allows you to map the entire 0-255 PWM range into a small fraction of the normal travel of a servo arm, which would come in handy if you wanted to make a more accurate range calculation to the green light.
I'd like to do a quick beta test to find any bugs or documentation problems before posting it to my web page. If you're interested in helping out, you can download the code here:
http://kevin.org/frc/frc_pwm.zip. If you find any problems with code or documentation, please leave a message here.
-Kevin
Edit: Changed link to point to released code.