I have a 2008 Bass Tracker with a 2007 Mercury Optimax 75 HP. While on the trailer, when I trim the motor up, part way the motor flops to the right and the steering wheel spins of course. Also, when the motor is trimmed normally I can freely with little effort push and pull the motor back and forth and the steering wheel spins freely in the direction I push and pull the motor. Lastly, while cruising I can’t let go of the steering wheel or it takes a hard right making it dangerous.
Could this be something with the way the engine pivots or the steering ?