Rarely use a pressure regulator any more. I have a pressure gauge that I use to check the campground pressure. Usually, it's somewhere between 30 and 40 psi. If the pressure is high, then I do have a Watts pressure regulator that I hook up. Its very unrestrictive, but still slows the flow slightly. When I was fighting through my problems, Jayco instructed me to stop using the regulator. They stated that their systems are tested to 100psi, and its' really not a factor. I got that in writing to be safe.
Brian, Mary, kids, beagle - Moose, and mutt - Maggie.
2012 Greyhawk 31FS
2013 Ford Explorer Toad