I bought an X-treme electric scooter ATV-1000 for my wife last Christmas (2008). I worked OK after the first 3 trys in January. There was a problem with the controller emitting a loud high-pitched whine, so I bought another controller that was suppossed to have this fixed from the factory. After installing it properly from instructions supplied by X-treme, it hasn't worked since. It keeps burning out controllers and throttles. At one point I had just replaced a controller, got on it to try it, let go of the brake and it came to life with... read full review »