I am trying to restore a 1955 cd-12 5.5 hp. replaced the worn clutch dog and changed the seals, now when I put it back together It stays in reverse in the reverse position and in the neutral position. I can get it into neutral if I put the shift lever between the neutral and the forward positions. but any bump will knock it into gear one way or the other. took it apart and reassembled several times, it makes no sense, and I can see no way to adjust it. the clutch dog seems the same as the old one. maybe something is worn out? My project is on hold and I've spent too much to fail now. If anyone can offer any advise It will be much appreciated thanks in advance...Tony