Quote:

I had a problem like this one time on the rear bowl. Turns out I didn't have a "notched" float and every time I installed it the float would get pinched between the bowl and the jets with extensions.
DC [/quote

This happened to me as well.I have notched floats but they were still hanging up on my long plastic jet extensions when I turned the pump on to fill the carb.Fixed it by turning the pump on and shutting it off quickly,doing this until the bowls are full.This has kept the float from sticking and sending fuel out the vent tubes.Try it and see if it works.