Hi. I am new to the forum. Guess I have acquired the disease. I was given a 108 that has an engine knock. Is it easier to rebuild the engine or repower it with something else? A kit for the Briggs is araound 50 bucks. I don't know what would fit with the electric PTO. I did have a vapor lock condition, but was able to eliminate that with a cab rebuild. The engine runs great now but I know it is eating itself alive.