Originally Posted by mangoman

I was having issues with my car with it spinning out on power coming out of the corner. The only thing i can remember doing is stiffening up the rear.

But you might want to check the hinge pins, in the Pro 4 they used to get bent easily (thats the pins holding the arms onto the pivot blocks). If they are bent really badly you can see it when looking at the arms without pulling the pins out.

Actually i do recall changing out some of the hinge pins but dont remember when i did it.