Piaggio Typhoon 125 Fuel Leaking From Airbox

[thomp1983]

Hi a mate brought me his w reg piaggio typhoon 125 to look at as it has a small fuel leak from the air box, it doesn't leak when running but when left over night leaks about half a cereal bowl. i had the carb apart a couple of weeks ago for a different issue and everything is clean and appeared ok in there, im assuming that the float needle o ring may be damaged or the float stop bent, does anybody know the measurements for the float on this moped with a mikuni vm20 carb and where i can source spares for it?

cheers
chris