Is this a common problem? I've had error 25 since I bought the bike 9 months ago. Been through 3 taillight assemblies and a new controller. Still getting error 25. Rad has been OK about sending out replacement parts, but I'm getting nowhere. The bike sometimes works, often not. If I get it running, it has a habit of quitting after a few minutes. Total miles ridden in nine months: 110.  I thought I'd use it daily but I can't take far from the house without some backup plan for getting home with a dead bike. My wife won't touch the thing.

Sorry for the whine, but yes it's frustrating. I'd like to know if others have had similar recurring problems and found solutions. I hope I don't have a Rad lemon.

Tks
BA