A 2002 yamaha f40. Had the boat out the other day she was running like a champ. Then on the way back to the dock I noticed she dropped like 5 mph, and I was like what the hell. After messing around with it i figured out the trim was settling. Got her on the trailer and checked the release screw, no dice she was tight. Now in my garage if i have the motor trimmed up it will slowly settle. what direction do i need to go from here?