First, determine if the problem is with the PWM or with the Victors. Put the robot up on blocks and swap a PWM from a working Jag and move it to one of the questionable ones, if the victor works, your PWM is the problem. Otherwise, your victor is the problem and might need to be replaced. I would venture to say that more likely though, the PWM is the problem. The PWM connections on the Victors are kind of finicky. I find myself needing to unplug and replug the PWM several times to get it to work. Also, make sure that the PWM is pushed in all the way and not resting on a pin that is out of alignment. All of these would cause the victor to not receive a signal from the cRIO and not work.
Hope you get it fixed,
Patrick