So purchased GSX250F for a project bike, removed the bowls off the carbys and soaked the carbys in fuel and air compressed the jets out. Did not remove the slides and needles cause we found the choke cable jammed. But the problem we are having is, we got the bike idling nice whilst on the side stand but once you sit on the bike and put the bike upright, it increases its revs a fair bit. We have tried what we think it could be but not sure. Does the carby need a proper clear, pull it right apart or is it an electrical issue? The air box is still off, would that be a factor?