I finally installed the unit by taking the transmission lever off for a few days to see if it was worth it to deal with grinding etc. The jury is stil out. I have a few questions.
The manual says wire the unit directly to the battery. Did you do this? What is the downside to not doing this? Could this explain some course deviation? (The manual says the unit is not ignition protected.)
Also, I still can''t figure out the rudder knob. It seems that even at the "1" setting, I am doing some large "S"''s. This makes it impossible to sail at a close point to the wind. Have you had a similar experience? Any advice would be appreciated.