Kornfed, I just changed out my rt hand circuit board when I was having my troubles. When I put her back together, the brake light (hand control) would not work. I didnt even notice. When I took it to Strokers to have everything checked out, they found it and said it was a switch in the hand control. My service guy even pointed at the thing. If you look real close you can see what appears to be the magnet that kinda looks like a plunger. I intend to tear it apart and and fix her again.
Service guy said for $85 dollars an hour he can fix it...I said for $85 dollars an hour I can remove two screws and a set screw an TRY to fix it!