This is my first time on a Holley rebuild and I have a couple of questions. Would appreciate any help. Carb is a Holley 4160. List #6919.

1. Replacing the accelorator pump - The diagram shows a check ball above the acc. pump but there wasn't one when I took the old one apart. Is this something that should be there?

2. Concerning the pump discharge nozzle - Diagram shows a "pump check ball weight" and a "Pump Discharge Nozzle Check Ball" below the pump discharge needle valve, neither of which I remember coming out. Are these absent on some models? or did I misplace them.

Thanks in advance.

HD