[MikeDubreuil]

I'm going to chime in here and say that calibrating the Victors is a very bad idea. You should consider it a design requirement in software to output the full values to the Victor. That means 127 is neutral, 0 is 100% power in reverse, and 254 is 100% power in the forward direction.

As Al Skierkiewicz said, the joysticks are basicly garbage. Your software should take into account their defects. I usually solve this by creating a deadband around the neutral point and also what you could call a "fullband" at the extremes (0 and 254). This makes sure we have a large enough deadband so hand jitters don't effect the robot and we are capable of sending full power to the motors.