Hey Povo. It's over a month ago, but if your still out there and having trouble, try draining the carbs first. Might not do it though, and if not, and the pilot jets are varnished, as I suspect, then pick up some "Sea Foam". Mix it with the fuel in the tank and ride it a while. It should clear up the idle problem. You can get Sea Foam at many NAPA's, and auto parts stores. Some farm suppliers carry it as well. Something else that works equally well is called "Conklin 4-Power". With either product, you can mix it about twice as strong as the directions state safely.