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pdlouche
Sticking float or worn float needle? I had some weird problems that I couldn't attribute to anything else. Turned out it was a combination of the float sticking (had been bent back and forth about 20x trying to get height correct) and the needle that meters in the fuel was leaking so it would keep flooding /getting way too high.
Even under a magnifying glass I couldn't see a difference between new and old ones.
Replaced needle carrier thing and seat and the float assembly. Literally took one tiny adjustment to get height correct and ita been mint ever since ( 3 years).
Carbs now need new main jet/needle as they are worn, can feel the pitting /roughness on your fingers. People riding behind say it smells of fuel when just pottering along but is Ok at higher throttle %