so i had someone tell me that the belt should be 20 thousandths from your primary clutch just sitting there. i have like a 1/8th inch gap. ive noticed with other sleds, they engage smothly, and mine just revs and when the engagment rpm hits, it slams the clutch into the belt and its really jerky and annoying. can a person shim the primay? oh and i tried my spair belt and its the same thing too so its not the belt.