Recently my carbs primary and sec floats have been dropping. Also on the primary side raw fuel is trickling over the boosters and seems to be coming from the squirters. (This was the main problem) I have replaced the needle and seats both sides and added a regulator thinking it might have been excessive fuel pressure. It is still occurring and I have found no contaminants in either float bowl. I replaced the small O-ring type gasket under the primary squirter with no luck as well. I noticed when I removed the squirter a small (valve) is under it. Could there be a contaminant holding open the supply to the squirter? I am reaching here and running out of ideas. What should my fuel pressure be? I am running a carter mech pump Please help, SS.