I have been posting on my transmission issues for awhile now. Still not quite there. I have a Yanmar 3GM30F with a Kanzaki KM3A (1984). I actually recently replaced the transmission with a used rebuilt one from EBAY so who knows what I got. Anyway, after it has warmed up a but it clunks when going into gear. It happens in both reverse and forward and it is a bit of a heavy clunk. I do have a Martec folding prop that I had reconditioned by a local boatyard recently so I will assume that it is not the prop for now but I am not eliminating the possibility completely. Anyone else out there deal with this issue? What have you found?