I took the 95 Thunderbird for a ride today and after about 10 miles of mostly highway speeds I was headed towards home and going 55-60 mph the bike sounded like it was cutting on and off, with the wind noise in the helmet I figured it just the wind drowning out the engine noise. As I approached a stop sign I started to slow and the engine sputtered and stopped. Coasted to a stop, started the bike and it idled rough and gave her some gas and it sounded rough. Shut her down and got off the bike to see if I could see anything leaking from the radiator or crank case, nothing. Started it up and it ran fine the rest of the way home (about 4 miles). What does this mean? Do I need Nology coils? Pickup coil? This bike has run without a hitch since I purchased her at the end of May.