I got a Dax 70 about a month ago, I just had the time to put it on this weekend, however when I connected everything I decided to take it out for a spin, upon riding it felt like something was holding the engine back. After I got back into my yard, and inspected a little, the magnet that was connected to the crank of the engine was destroyed....This really sucks.... I noticed threads on it. is it possible that I can take off the engine's magnet? Or do I need a new engine?