I have the same problem changed the fuel tap kid it's stopped flooding. Everything depends on the floating lvl to high it floods and spills also carburettor tilt matters I'm technic mechanic of school but just been doing bikes remand tell you one thing this Carburettor isshitim thinking of putting carb set this could improve a lot atm if you want to chat find me o FB Krzysztof gwozdziu Pulka