Pulled carb for cleaning on my 350. Runs great after install but is overflowing gas from the drain line at the bottom of the bowl. Drain screw is tight; I'm thinking the float level needs adjusting? Can I remove the bowl and bend it down w/o pulling the carb back off? Is there something else that will cause it to overflow? BTW, it only does it after I shut it off, not while it is running. Thanks!