I am at my witts end, I have been having the same problem of overheating as multiple people have on this forum so I have started replacing all the gaskets and pressure valves that may cause the problem. I removed the lower unit successfully (Thank you PB Blaster)as disconnected the shifting arm. I had the boat in neutral when I disconnected everything. I replaced the water pump inner gaskets exhaust rubber etc. Put everything back together and reinstalled the lower unit.When I attempted to re-attach the shift arm it was to low by about a quarter of an inch. I was able to pull the arm up gently to line up the holes and put the pin in. Now when I shift into reverse and I spin the prop by hand the engine works with it. In neutral the prop spins freely both direction. When I put it in forward and turn the prop in the correct direction it makes a clicking sound like it is not engaging and also has no tension on it from the engine. Please help me finish this project the fish are biting.