I have a 98 700 triple grand touring.It is fouling one plug with fuel.That cylinder has spark and i swapped plug and coil from working cylinder and it still fouls.i cleaned carb(even though i remove and clean them in the off season)I ran the sled for 20 km thinking it might be bad fuel.I know little about these carbs but i checked float level and air/fuel adj.(18.2mm and 2 1/2 turrns respectively)Can someone PLEASE HELP!!Thank-you