I rebuilt this 8BA engine about 500 miles ago and it’s had a constant clicking sound that sounds as if it’s coming from the timing cover. I’ve torn the engine back down and have checked everything I can think of to check to include valve adjustment on the Isky Max 1 camshaft. I noticed the cam gear over hangs the crankshaft gear. Is is normal or a common problem? The gear is an aluminum Cloyes that was in the engine when purchased. Thank You.