O.K I DONT WANT TO GET INTO THE WHOLE PLUGING ONE OUTLET ON THE MUFFLER DEBATE BUT ITS WORHT A TRY IF ALL ELSE FAILS . MY 180 RAN FINE AS STANDARD BUT THAT WAS ABOUT 5 YEARS AGO. JUST MAKE SHRE THERE IS PLETY OF SMOKE COMING FROM THE ENGINE. LEAVE THE PLUG DRIVER ON AND GOT TO FULL THROTLE. IF ITS RICH IT WILL RUN BADLY BUT WITH PLENTY OF SMOKE. START WINDING THE HIGH END IN FROM THERE .

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