Hello everyone, I have a B&S 5hp flathead, that seized up do to lack of oil. if i put a pipe wrench on the keyed part of the output shaft the piston spin but not easily. I think I threw the bearings, since its a model tat uses bearings not bushings. But what is the possibility of the hardened shaft getting eating into by the bearings? the seizure was not an abrupt one it was like a slow down reving sound. also the piston walls are fine.