ok so let me get this straight.. sorry if i sound like a retard but i really dont know how this works. The threded stud on top is set up for a fuel press line/gauge?( does it be topped off with either a gauge or line or can it remain open) the vacuum line bove the allen head is where the stock vacuum line off the intake manifold goes? and u just adjust it from the allen? could i move the gauge to the regulator for easier access to it? thanks again ...

oh why would my stock fuel press be at 30 idle and not 39?