I want to verify my understanding on flex copper tubing and propane in the home.
Carl, I see why you were there so long. What a mess.
Looks like a galvanized tee in the crawl space.
The rest is poor workmanship at least.
No drip/dirt leg.
More for sure.
Real nice:
You never know.
Recommend a Local gas Company evaluate the system piping.
Marcel 
In this case I believe it should be the Propane supplier.
And you’ve only seen the issues I am uncertain about. I won’t use them all but I took over 250 photos documenting problems. Most I know how to call with my eyes closed, like this beauty: and it’s 2prong. Sorry, that’s a spa tub just beow the edge of the pic.
Is that were the TV goes?:roll:
yep, poor photo, good eye. That is a coaxial jack next to the plug.