Billet Edelbrock fuel pump pre set pressure

[mopardave]

I have a SX fuel pump, they were bought out by Edelbrock years ago, so Edelbrock pump is same. They came pre set at 12psi. I need to know how many turns out on the adjusting screw when they left the factory? I turned the adjusting screw all the way in and pressure does not change. I just want to set back to factory and forget it. I run 6psi at the carbs.