JUST THINKING OUT LOUD....IS YOUR BIKE MODIFIED??? MINE HAS A FMF PIPE AND OTHER GOODIES AND DOES NOT RUN WELL AT LOW RPM AND WILL FOUL A PLUG IF I PUTT AROUND. BUT GET IT OUT ON A TRACK AND IT RUNS GREAT. HAVE YOU LOOKED INTO JETTING THE CARB???
MAYBE IT IS JETTED TOO RICH????
