I have a racetronix pump and lines on my frame off. I have an accufab pressure regulator and gauge mounted on the fuel rail (see pic). When I turn the key on, the fuel pump activates and I can feel and hear fuel coming in on the supply line, but I don't have any movement on the gauge that mounts to the end of the rail. Is there anything that has to be done on the new pressure regulator to get it to work? Since it hasn't been run at all yet, would just trying to start it ultimately get it to work? Appreciate any feedback.