My motor runs great in drive way on muffs both reverse and forward . Then i put it in the water on weekend and put it in forward no problem lots of power. Then shift into neutral no problem. Then i put it in reverse it started to grind and put it in reverse a little more and the motor lifted out of water. So how do i adjust the lock switch . I was told it was inside my out drive and what does it need to be set at? I would also like to change the 2 wires that go up under the flywheel they are starting to peel the coating off the wires . So where can i get a flywheel wrench ? Also how much they cost any ideals?