I have a 2000 335 sportsmen. Carburetor was giving me trouble and decided rather then rebuilding it, I bought a new one installed it. Machine starts right up and idles fine, but as soon as I try to open it up the engine will die. Also notice gas dripping out of small hose on bottom of carburetor. Engine starts right up again but will not run when given throttle. Thought maybe float adjustment was needed but not sure. Also I only see one adjustment screw on it and right now is set at 11/2 turns. anybody have any suggestions