Service tech did not adjust - I watched the regulator box unsealed and the installation. I fully understand the engineering required and concept of tolerances, both manufacturing and operations - but this equates to around 20% ...
I pulsed the tech yesterday on the pricing - he is standing by their cost of $198.40 for the regulator ... everywhere I look it is $60-80
I’m sure the gas regulator is good enough (overpriced and marked up but good enough). You’ll get a few good years of life out of it and then you can always replace it with something better later. Don’t let the pursuit of “the perfect” be the enemy of the “the good”. Just make sure the regulator model you have provides enough gas flow for the appliance so that it’s not limiting your flow rate. We had a gas furnace that struggled for a while when we first moved into our home. I had several different “technicians” come out and they all shrugged their shoulders and gave half-cocked excuses for why it was normal and why I was being too picky. They also spent most of the service visit just trying to sell me a new furnace instead of trying to figure out what was wrong with the one I had. After three different companies came out, I decided to take matters into my own hands and within about an hour of poking around the equipment and reading online service manuals I discovered the regulator on the gas pipe was too small for the unit. Whoever did the original equipment installation put a regulator on with too low of a flow rate requirement (our homes in my neighborhood are “housing craze homes” built in 2005/2006 … so they were all built like total crud by “contractors” that were more interesting in collecting their pay than doing a job right …. Never buy a home built in 2005/2006 time frame). After replacing it with a properly sized regulator, the furnace worked much better and the heater didn’t need to struggle to keep the house warm.
Long story short … you’re fine. Go enjoy your pool.