Ok I have 1982 johnson 60hp with low compression on one cylinder out of two cylinders. One has 90 and the other has 120... I found metal shavings in the lower unit in the exhaust port so that made me check the compression and it was exactly what I thought. One cylinder was low. What causes this? Could it be a ring on the piston then that caused it to scrape the cylinder? What's the best options I have? I was thinking should I sell it or redo it? I found a 1997 johnson 50hp with controls for 500$ what do you guys say? Sorry for so many questions in one question.. Just trying to learn lol boat is 14' skiff... I just redid the carbs lower unit seals lower unit water pump kit and impeller starter new battery and power pack.. So I have some coin into it.. What do you guys say is a good selling price