I have a 1987 Alpha one coupled to a Merc 230. I hit a underwater boulder bent the prop shaft and sheared of the top part of my vertical shaft. The rest of the outdrive was fine. I purchased a used lower gear box to use the two shafts I needed. They were true and in good shape. I rebuilt the outdrive replacing all the seals. When I took the boat out it would run fine until I put in gear and then I would get a high pitch whine from the out drive, only in gear, forward and reverse. I put the same shims back in that I took out. I/m also getting water in the drive which I'm trying to figure out, Any help would be appreciated!!
