yea i just listened to it again with someone else here, it is definitely one of the two belts that is too tight, if yours has a counterbalance belt.... if not, even though it uses an auto tensioner it is still possible it is too tight, because when ytou re-use your auto-tensioner instead of replacing it you have to do a couple things (which I forgot since I replaced mine) otherwise that could cause the tension to be too much, definitely is a belt that is too tight though.....