Ok guys heres the deal. I bought a 1996 YZ250 this winter. I race motocross in the Vet classes. I had the suspension and a long rod kit done by MCR. The bike is absolutely a blast to ride. The jetting is dialed and the bike rips. However, one small problem. the Keihin carb does not have an idle screw or any other adjustment. The only thing it has on it is a fuel screw. I can not get the bike to idle. Any of you old 96 YZ guys remember what the trick was? Please help.