While trying to tune the new combo yesterday I ran into some belt slippage. The day before I was getting about 14 lbs of boost of the car, but yesterday I could only get 9-10lbs. I have a 3 inch pulley on my Novi 2000 and am running a 107.3 inch belt. I think that the belt is a little long but am not sure which one to get. If someone knows, please help me out.