Just changed the upper radiator hose on my 69 BB. It had a groove in it where the alt. belt hit it. I think there are 2 possibilities as to what happened. I recently changed the belts when I replaced the ps pump. May have hit when the belts were not tight. Or, broken motor mount. The hose is about 3/4" above the belt. The engine does move up about 1/8" when reved up, but I think this is normal. I replaced the motor mounts about 3 yrs ago from Autozone, don't know much about them. Any thoughts on a broken mount? How to check? Thank you.