Fuel dumping from booster venturi

Thank you all for the replies. I've done and checked everything suggested in the previous replies and decided to throw in the towel and order 2 new carbs (Holley 750 Ultra XP's). I'm going to bolt them on out of the box and see what happens, I will let you know. If anybody is interested in a pair of 800 cfm. Edelbrocks let me know.
Thanks, Mike