HEY ROB, THAT IS WHAT I WOULD DO ,PULL THE DAMPNER AND LINE UP THE LOWER GEAR WHERE IT IS SUPPOSSED TO BE, THE KEYWAY IS TDC SET AT 12. OCLOCK , ALLSO ON THE GEAR ITSELF IS A NOTCH THAT YOU CAN LINE UP WITH A SLASH MARK ON THE FRT SEAL RETAINER , IF THESE LINE UP, THE MOST THE CAM PULLEY SHOULD BE OFF IS ABOUT 1/4 TO 1/2 TOOTH, AND THIS IS USUALLY CAUSED BY THE HEAD OR THE BLOCK BEING SURFACED AT SOMETIME OR THE WRONG HEAD GASKET THICKNESS, THIS AMOUNT WILL NOT CAUSE ANY PROB, NOW WITH THESE MARKS LINED UP SLIDE THE DAMPNER ON AND SEE IF THE 0 MARK ON THE LOWER CVR LINES UP WITH THE SECOND MARK ON THE PULLEY EDGE (THE SECOND ONE THAT COMES UP AS YOU ROTATE IT CLOCKWISE , I HAVE SEEN THESE THINGS OFF BY AS MUCH AS 3-4 TEETH, DONT HOLD THE PULLEY WITH A BELT WHEN YOU TIGHTEN THE BOLT THAT CAN CAUSE IT TO SLIP ON AN OLDER DAMPNER, PUT THE TRANS IN 4TH GEAR AND STAND ON THE BRAKE AND YOU CAN TIGHTEN THE BOLT TO WHATEVER YOU NEED TO, DONT TRY TO USE 5TH TO MUCH SLACK IN THE GEARS TO TAKE UP, JERRY