| If all of the above fails, it might be worth checking the throttle position sensor (TPS). if this is playing up or has come loose the ECU can be fooled (fueled?) into thinking the throttle is open more and hence supplies more fuel, so you open the throttle more to clear it etc etc......
HTH
Paul
15th year in DD #68 and getting slower by the year
1199, SS800 & 620SSie DD racer | 
paynep
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