hey folks.. hoping to pick your brains here

My NC29 had devleoped a mis fire and was running like a bag of spanners for awhile but think i sorted it. but the next issue is that it appears to have developed a dislike for petrol, as it seems to be spitting fuel out of the carb breather on the left hand side of the carbs (if they were numbered from right to left, it is the breather between 3 and 4)

does anyone know why it may be doing this, and how i can stop it from doing so?

cheers

mikey

You may have a sticky float. Carbs off and remove the offending float bowl to have a butchers would be my first guess.