Wookie, I agree, you probably tweak it a little to work a bit better or tighten, replace a few o-rings, etc.
I have given Lds the work to rebuild reg sets, to my suprise, each one has failed. Even to my atomic, I get it back and it still leaked out of first stage, I opened it and changed o-rings, still leaked. could it be fixed not sure, I Know for sure I put at least 250 dives on it in 99, 141 dives in 2000, and 213, in 2001. Took in for recall, and it leaked dove maybe 50, on it 2002.
I tried the atomic, as they were the scuba pro employees that started it.
Ok you see a heck of a lot of dives and never touched.
Took it in 2008 and now it still leaks as I said not sure if I could fix. Problem, probably wore out. they only put new kit in and its now still not working. Same time took in seaquest reg, and they rebuilt and said after rebuild they found out housing is cracked. So it is like my USdivers, beachuet, so internal parts are still good.
I have had this type of service go on my whole life. Tried again this last decade.
I Buy scubapro regs from brett at leisurepro, and will never take them in for service ever. only a nice proper rinse. After 500 dives I get Another, I have many sets, and all work great when never serviced.
That tells me how the odds are. I tell divers here to buy new and spend money on new instead of rebuild, its cheaper and guarateed to work.
I waste time, gas money, a burnt dive(actually learned to bring backup, but still) and a feeling of not happy with the tech that built. So I can be happy in a dive shop when I go in to just buy new.
I Have worked on more gear on my surface intervels going to next sight, on my dive holiday in warm water diving, too Know completely what Wookie is saying, what I see is the norm.
And for the ones that suggest you need a good tech, aint worth a few bucks more for a new reg, waiting at home, or delivered when home.
I haven't a clue of why there are not many gear failures in accidents, except they fail before you dive, and thats why I help fix before a dive.
Happy Diving