i just rebuilt the carb now it runs worse

i rebuilt it because of occasional run on and it started leaking gas into the intake after i shut the engine off so it was really hard to restart when warm i put a new base gasket on iand i tightened it good.

secondly i know i should just get a new one but that would mean getting a new intake and a bunch of other things cause i won't replace it with a stock 1 bbl