Starter box not turning my engine
 

hey guys, I just recently got an ofna starter box and it's pink and made for 1/8 - 1/10 scale cars. Anyways, I am tryign to start a tc3 on it and for some reason it wont turn the motor. The wheel seems almost a little too big for the car cause you have to position it just perfect for the rubber wheel to even conact the flywheel. Anyways, when it does, you can see when it happens cause the flywheel just moves just barely and when i pull the car off, there is little bits of rubber warn off on the flywheel. My motor is the OS .15 with pull start. What do u guys think?
Thanks
Kyle