I have a 40 HP 1988 that has been laid up for 10-15 years and it brakes the leaver that is plastic. I drained the old gear lube out that did not have lot but no water in it. It takes a lot of force to put in gear and back. Any thoughts as to why it is hard to shift and by me changing the lube do you think it might work it way in and get to shifting easier or does it need to go in the shop? Also I am running the motor when I try to shift it.