While tearing down a new one last night, I saw a couple things that should be checked. The crankcase/transmission breather hose, runs up and over the intake, then back down to the outlet on the center case before going down out the back. They attached a ziptye where the breather tube crosses itself at the center case. This ziptye was pulled so tight, it crushed the tube down easily 70% of it's already small capacity. I would cut one off (ziptye) if it is was that tight, and install a loser fitting one. The coil is also mounted to a bracket, the bracket is then mounted to the downtube of the frame. Where this bracket is mounted to the frame, it had practically no metal to metal contact as the frame is painted. You could see where there was an attempt to clean a little paint off, but not nearly what I would consider adequate for this to ground properly.