My boat is wearing me out. I have a Merc 80HP Outboard 2-stroke. Idles fine and runs at top end fine. When I put it in gear it dies. I have to jam it in gear quickly to get it to go. The carbs are all cleaned. I ran the three cans of sea foam through. I noticed today that my voltage drops and dont go up when the boat runs. Can someone please help me!!!!