Hello. First of all, please forgive my technical vocabulary.... I recently bought a boat with a Evinrude 85 HP (85999). Here is my problem : when i press on the "up" button, it happens that the motor doesn't stop when i release... If i want the motor to be at its maximum down position, it stops and reverse back to the top, and there, same problem : i have to unplug the "+" or "-" on the battery. I checked the "down-up" button, it seems to be OK. I opened the "relay" (a black box where a lot of cables are connected), but i don't understand anything about it... Any help will be welcome ! Thanks a lot.