I agree with J-Bone. If the stator is the issue usually it will start out as an iterimmtant problem. I owned the exact same sled and had the same thing happen. To replace your CDI box the motor will have to come out, as it's directly under the motor. While the motor is out it's worth checking the wire harness on the MAG side for wear. It should be rerouted so it's not rubbing on the frame and flywheel housing.Get some plastic wire wrap and re-wrap the wires. Aside from a couple electrical problems thats a great sled, fast and good for alot of miles. Hope this helped.