[TheBassett]

How are you guys driving your robot? We used tank drive when we had mecanum wheels(both Vex Pro and Andymark) and had no problem strafing with it, even before we put any regulating code on it. We haven't really tried anything but tank when we were using mecanum so maybe that's the difference?

Also, if you are using Andymark wheels try making sure each roller spins freely, occasionally those rods got bent on ours and it would stop or slow down one of the rollers from spinning and also make the robot do strange things.