Does anyone know the correct way to adjust hydro motion linkage on wheelhouse 520h? It automatically goes to neutral position when brake is pushed, but actually it is a little past and creeps backward. If I adjust so it is in full neutral, then when motion lever is all forward, speed is really slow, but reverse is fine. The cam on Trans is travelling all the way over in forward slot, and then all way over in reverse slot, just can't figure out forward speed. Has plenty of forward speed as it is, but not going all the way to neutral. I have tried loosening and tightening each linkage and can't get it right!