Ran out and checked, the pump moves with every movement of the throttle. It couldn't be any more "right now". I have glass fuel bowl sights and the fuel level stays put just under 1/2 way in the window but I will back the pressure down to 5-6psi. I am almost exactly one turn in on the idle speed screw from completely closed plates and she idles well at about 7-800 rpm. The jets will have to wait for another day. I had this same issue (stumble) with a 1406 Edelbrock and that's why the Holley is new. lol

Anyone have ideas on what the discharge nozzle size is?