I'm having trouble following what you are doing in your code. Are you constructing a RobotDrive object with 3 CanJaguars and one Victor?
Regardless of whether you can get the software to work, I would not mix Jaguars and Victors in the same drivetrain and especially not in the same transmission. Look at these
speed curves and think about what happens when you have an output of .1 to both the Jaguar and the Victor and the Jaguar is going 10% speed and the Victor is going 50%. You're motors will be fighting the whole time.