You obviously have an axe to grind. What would be my axe? Very, very few LDSes advertise here and like you most simply distrust me. In spite of that, I feel it's important to be fair to them. What does is say about you that you suspect anyone who simply wants to give everyone a fair shake? You seem to enjoy being antagonistic, accusatory and seem to suspect anyone who isn't that way. I couldn't live like that.
You have put in much effort to make your board more appealing to entities that make $$$ through scuba. It looks like you are having a bit of success reaching right on down beyond manufacturers into the shops. Just imagine what might happen if many shops were pushing their divers towards Scubaboard.
Yes, I am suspicious of some of the things that people who profit by others taking up scuba when they do things like charge them for services and equipment that were not contracted. I don't believe I accused the particular shop in this thread of cheating or scamming the OP. I did, and still do, question what the shop did and how they did it.
What you seem to be perfectly happy writing off as a simple communications problem, I still find to be questionable actions by the service provider. I have seen a number of regs that deserved an up-charge for service, but not because a little SW might have gotten inside. Regs take that OK up to a point. And, when they pass that point, parts are damaged and require replacement; not just a small extra cleaning charge. I have also worked quite some time just to disassemble a regulator; but those cases were almost always quite obvious when you see the green growing at all the metal edges. (On rare occasions I have seen such difficulties on a clean looking reg due to assembly errors.) But, if the OP is happy paying an extra $70 for things he did not ask for and reasons he does not fully understand, then he will probably continue to be welcome customer in many dive shops.
As far as my axe that you think I am grinding, I am not looking to make any $$$ and, while I would like to see some things change for my benefit, I'm pretty much set for the rest of the time I will be diving, But I do try to help other divers who are looking for help that I can provide. If you would rather I didn't, I'd be willing to stop.
I guess one difference between you and I is if I ran into Peggy and was upset enough to post about it, I would not have just told my friends about her; I would have told them how to avoid her.