I took my lower unit to a mechanic that does side work for $45 an hour. Friend gave me his number.. My unit was grinding going into gear, thought it was clutch dog. I was gonna have him take the carrier nut off and pull the parts so I could fix it. He said bad idea and that he should do it.. Turns out all the gears are good, and clutch dog is good. There was a lot of water in the unit, so thats what made it grind. Also slightly bent prop shaft. Said he has a used shaft, and will put 3 seals on the lower end for $355. That price too high? I want to do it myself, he said the shaft is $170, but again said he should do it. Any suggestions?