Originally Posted by nexxus

If the belt is too loose it will skip when coming on power that will cause wear, it sounded a bit as if it were skipping when you were coming onto the main straight yesterday, perhaps run the rear belt a bit tighter?

Failing that check the centre pulley if it moves from side to side, I know I had to add a half dozen shims on mine to remove the slop, and that'd cause the centre pulleys to be mis-aligned