[coreyjon]

We had the same problem last year, too much traction, it seams can also be a bad thing. So we simply wrapped the two front tires in a bunch of zip ties (not the best looking) but elegant in it's suplicity. Hind sight, being what it is, you could have always gone for real grippy front or rear tires, and gone for some of thoose fancy omni wheels on the other set. Still provides great forward traction, and at the same time, allows you to turn without causing as much load on the motors and drivetrain.