ok, had my bike serviced this week, gettin ready for the nex dyno run, the only thing i had the dealership do was new plugs, change oil and filter, and check my forks. it didnt seem to be idling right. check engine light came on about 20 minutes of riding, and it would sputter off the line. very jerky in low rpms and eentually the bike stalled and now wont start. it turns over like it wants to start, but never does. also theres what sounds like a loose peice of metal shaking around when the bike turns over and fires. any thoughts ? PLEASE HELP!