If it continues after you've tapped and\or drained the bowl, possibility the needle valve has some trash under it. My Rhino did this one time and I found a piece of trash about the size of a piece of pepper stuck under the needle valve. This kept the valve open and it drained out the overfill tube even though the bowl drain screw was tight. You can check this part of the carb without removing it from the machine. Just loosen the hoses and spin it upside down and remove the bowl screws. Be warned!!!! Those screws are very tight and soft, go ahead and get some ordered or replace them with allen heads if you go that far.