I have a 2001 205 Osprey with a 200hp Johnson O/B. I just started to have an issue with the trim/tilt control on the throttle sticking in the up or down position. I'm sure it is corrosion on the contacts, but I'm not sure if I can replace the switch assembly, clean it or do I need to replace the entire controls. If anyone know where I can find a diagram and parts, it would be greatly appreciated