was pounding the trails last night and the whole lighting system , including tach/speedo went out. it will flicker on and off when u jam the handle bars back and forth, wont the wont stay on. then this morning took it out during the day(light still not working)and the longer u ride it the worse it runs . its like its fouling plugs,but if u shut it off and try it latter it runs better and then gets worse.dealer doesnt have a clue and neither do i. I NEED HELP!!!