THIS BIKE IS PRONE TO "LEAN STUMBLE", THE BIKE RANDOMLY DIES WHEN ACCELERATING AWAY FROM A STOP DUE TO LEAN TUNING TO MEET EPA STANDARDS WHICH CAUSES THE BIKE TO RUN VERY LEAN IN "CLOSED LOOP" (IDLE CIRCUIT). THIS HAS HAPPENED NUMEROUS TIMES SINCE OWNING THE BIKE. ON THIS INSTANCE I WAS PULLING AWAY FROM A STOP LIGHT WHEN THE BIKE DIED CAUSING THE DRIVER BEHIND ME TO BUMP MY REAR TIRE THUS PUSHING ME FORWARD AND OFF OF MY BIKE. I SUFFERED A HAMSTRING INJURY TRYING TO KEEP THE BIKE UPRIGHT. *TR