I have an 2002 400ex, with more time sitting than riding on it. I am having a carb issue. My overflow tube on the carb bowl continually runs fuel. When I put the petcock in the off position, fuel still runs. I assume the petcock is faulty there. My real concern is the carb dripping fuel all the time. I replaced the o ring on the bowl drain screw, and I am assuming im having float issues. Either the float height isn't right, the float is sticking or the needle isn't seating. Can anyone else give me any insight? Aside from these issues, the bike runs great, idles good, has great power.