Just remember that pressure regulators LIMIT pressure; the do not increase it. That being said, a bad one (corroded brass) can deliver lower pressure than the campground's pressure even if in limits.
Lou and Laura with Bella - German Short Hair Pointer
2008 GMC Sierra 2500HD Crewcab SB Allison Duramax
2010 Flagstaff 8526RLWS - Superglide 3300
HAM CALLSIGN - KC3FFW