Hello all, I have been trying to determine the number for the cam drive pulley outer bearing. Research through several older threads indicates that one can go with the bearings from the official suppliers or that the same bearing can be purchased at one fifth the price if you know the bearing number. And that number varies depending on who has most recently done the work. My question is simple; What is the bearing number and spec (C3 or C4) to purchase at my local bearing shop? Thanks all!