I am trying to get my sons 03 650 V-Star Clasic running again. I rode it a few months ago, ran great, however, it stalled once. The next time I tried to get it going, There is NO spark getting to the plugs. The switches at both the kill and kickstand are fine. Any ideas what might have happened to cause it to stop fireing all of a sudden? Checked all the connections under the tank also for tightness, all was fine. Any suggestions would be appreciated.