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I recently picked up a 06 S40 that has been sitting for quite some time. Upon trying to start it, realized that gas was leaking out of the air box. Pulled the carb out and on the intake side, there is what seems to be a sort of vent tube coming from the bottom bowl. That is where the gas is coming from. Tried cleaning the carb. Replaced the needle and seat. Adjusted the float. Still overflowing. Today, I set the carb in a tub without the lower bowl on, to visually see if the float was working, and it did cut off as soon as the lever got high enough. But it still overflows as soon as I put the bowl back on. Is this some that anyone on here has dealt with? Any help appreciated. Thanks!