i got an aem fpr and a walbro 255 pump recently. the fpr doesnt have a place for the fuel pressure gauge like some of the other fpr's i've seen, so i bought one. where should i put it to get the reading? i'd assumer on the fuel return line after the fpr but please correct me if i'm wrong. i have the fittings and shit to get it on, just gotta make sure i put it in the right place.