I had to tear it down to re-sleeve one cylinder due to a cracked piston and broken ring. While inspecting the rods crankshaft bearings ect. I found that the bottom rod and the third one up had wear on the top sides and also the crankshaft had wear from the rods. None of the other rods or crank have any wear nor the bearing. The motor was getting plenty of oil nothing else looks bad. Anybody got any ideas I talked to a friend if mind that is a good outboard mech,he said he did not have a clue.