I’m not very familiar with HOG regulators, so what follows is general information and may not apply.
Yes, everyone
should have an IP gauge, and in the OP’s case it would be very helpful. But, what if you don’t have an IP gauge? You’re on vacation/on a desert island/ in the middle of the Pacific Ocean in a life boat and you want to get a dive in-but darn it, you dropped your IP gauge and you need to figure out what to do about a slight freeflow.
The OP has two second stage, one has a slight freeflow-the other does not. Possibly there’s elevated IP or creep coming from the first stage. If it’s a simple matter of elevated IP-just adjust the second stages. See
@fmerkel ‘s post #2. If there is IP creep, the first stage needs attention. However, we need to determine if there’s creep or not. Remove the second stage with the freeflow and plug the port. Hook the first stage up to a tank and pressurize. Wait 30-60 seconds. Does the “good” second stage begin to freeflow? If yes, the first stage is suffering. If no, chances are the removed second stage needs either a tweak, again as described by
@fmerkel in post #2 or it will need service.
Now there are some people who will try to kill you by offering bad advice. I’m only giving the information below so you know what bad advice looks like-even though it may sound like it makes perfect sense. These people may tell you, “That’s not a bad freeflow, just swap it out with your other second stage and use it as a primary. That way you’re not wasting the gas that flows from it. Have it serviced when you can and enjoy your vacation.”
One addition to fmerkel's procedure: While adjusting the second stage orifice, the purge button should be depressed to prevent seat engraving.