i got a 1980 puich maxi with the 70 cc airsal kit. i had it idling and the chain popped and after that it wouldnt start. so after many hours it finally started with the help of starter fluid. i was riding it for about 5 minutes and it cut off and wont start. its got very high compression and fuel flow and spark. my best guess is the magneto is about shot. i wanted to know if anybody knew any other possible causes of my problem before i bought a new magneto.