Wheel mount problems

I am creating a wheeled vehicle, and I replaced the buggy with my gokart in the racing example. Well, when I load my gokart into showtool, everything works fine. I can mount the wheels and they look great. But when I start it up in Torque, the left wheels are aligned, but the right wheels are offset quite a bit to the right. Plus, all four wheels turn, even though I set it in the script to only turn the front wheels. Any ideas?