are the valves set correctly? Could be that, or just more carb issues, just getting them synced up since you've now had them apart and it seemed to have new floats in there.
As for the leaking bowls, try tightening down the screws...just not too tight don't want to strip the threads.
If that doesn't seal them up, get new gaskets. It's worth it for the piece of mind of non-leaking carbs.
Don't use gasket seal crap, just gums them up more, and the gas usually eats it anyway.