He will tell you I was one of the best mechanics to ever work them bay's. One year we were AAA station of the month. Beach bum bitches with key's in the trunk. The shift problem you describe is NOT something you should live with. Any good mechanic would check the shift cable from the lower unit to the motor.
Chances are that there is a kink or a sharp bend in the cable.
I have seen this problem in the past. I believe it may be for sale. Anyway, how can I get in touch with you relative to the 17ft hull. Also, interesting that you are at Lake George - during the summer I am at Schroon Lake. Donzi days are coming and Im getting my spring list ready.