Since I moved to Virginia all the gas stations around here have the 10% ethanol. My bike has not run the same since I have had to start using it. Today it quit running and I had to run the starter and shake the tank to get it started and to keep it going. I finally got whatever it was out of its system and I made it to work OK. I ride all year round so maybe it was just some bad gas. I had it rejetted for aftermarket pipes and it has always run great in all kinds of weather. Is it time for a tune up, an additive, use a different grade other than mid-octane level gasoline or just get use to it?