One thing you can do to check offset without the correct tool is to use a thin, STRAIGHT piece of steel or aluminum thats around 12-14" long (havent done this in a while so measure first if your going to buy a piece). Remove the belt, and when the secondary is still open, place the metal piece on edge down into the secondary clutch and remove the holding screw so the secondary sheaves close and pinch the metal and hold it in place. You now have a pointer thats dead center in your secondary and it should be resting dead center of the primary bushing. Eric