Mike,
An old drag race trick is to take a short piece of rubber fuel line and connect the top carb vent from the primaries to the secondaries [like the top 1/3 of a circle] now cut a 1/2" hole in the top of the hose as the vent.This will eliminate fuel sloshing out of vents or at least eliminate that possibility. Next would be to run an inline fuel regulator, set it at 5 PSI for street.
Good Luck,
Perry.
