Im running an a/c delete pulley on my car with a smaller pulley on the alternator (2.5" as opposed to factory 3.5" iirc). As a result, the belt has been slipping on hard shifts. I installed a 1" shorter belt the other day and I am still getting the belt slip. Im beginning to think it may be caused by the plastic a/c delete pulley. Next step was going to be dropping down another belt size and getting a gatorback. Thoughts?