I have a 1970 60 Hp Johnson Hydro Electric Shift engine and I am having issues with the manual trim lock mechanism not staying locked. When the engine is down it is supposed to stay locked to the transom to keep it in place. However mine won't lock at all it will go into place but if you pull up on it, it unlocks. Or if you put it in reverse and give it some gas the engine comes out of the water and slams down. If you need pictures to understand let me know.

