Need help with edelbrock 1406 carb

No fuel should be dripping from the venturis at idle. Only fuel to the engine comes from the idle mixture screws. I would try replacing the needle/seat and set the float slightly lower than specifications. If this solves the issue, consider resetting the floats to specs. 1/16th to 2/16ths lower than stock should work but may lean out the mixture under power. But this will put slightly more pressure on the seats.