Good ol rm's. Mine did the same thing. Make sure you take every single jet out and clean it super good. The floats should have the little pins closest to the bottom of the carb, and the float tab can really only go one way so you should be able to figure that out quick. If it still overflows trying giving it a light tap on both sides with a screwdriver to make them unstick. And then they should be good, but you might have to tap them now and again. But when you have it apart again take the floats out put them in a container with some gas and hold them under and if they fill up, you need new floats, if the float then you're good.