Yeh
Seconary float level high? any way--if your needle / seat assy won't hold the fuel pressure(do you have a pressure guage?) holleys have some various size seats and the bigger ones are diffently pres sensitive, if the bowl vents over it sets on top of the throlle plates/shaft and leaks out the shaft end-will form a drip on the screw every time.

want to verify it????? after you shut down the engine, drain the float bowls by pulling a corner screw and drian into dixie cup-no smoking, and engine will be hot so careful and know where fire ext are-------