Ok, so this bikes been sitting for about 4 years. I pulled it out, replaced some parts, fuel line, kill switch, throttle cable, etc, but still running the same carb. It's one of those cns cone carbs that grubee used to make. The engine will start with the choke half on, but give it any throttle and it dies. About 5 min of running and it dies anyway. Also, there's fuel POURING out of the overflow tube at the bottom of the bowl. I tried cleaning out the air filter, adjusting the idle screw, and bending the float. Any ideas?