hello about a month ago i got a leak in the two pvc elbows on my tensioner pully i got them fixed but i think the hot water spraying on my tensioner pully caused my bearings to go out in my tensioner pully so i took it off and went to napa togeta new one they tryed to sell me one but it was wrong then i went to advance and they tryed to sell me the same one now they are telling me i have to buy the hole assembly i only need a new pully or new bearings any body have any advice were i can get just a pully or the bearings