Damndest thing. Previous owner put a small performance pulley on the crank dampener. I don't like the low volts at stoplights, so I try to put the old 7 3/8ths one in and it hits the crossmember. What the hay?? It looks like I need one about 6 3/4 to 6 7/8ths to not hit and be able to change out the serpentine belt. Can motor mounts weaken and sag that much?! What's the solution?