garyfotodiver:
They have the tools and the training that I do not have. They also do it regularly, not just once a year.
Ya, but they have to USE the tools, training... and intelligence.
I had the dealership leave my freaking radiator cap off after changing an exhaust manifold. Parking after a 50-mile drive up a steep grade, my buddy noticed a whisp of steam from under my hood. The radiator cap was lodged between the block and distributor.
That would not have happened had I done the work myself. When changing the oil or coolant, the removed cap is placed ON the hood latch. There's no way I'm even closing the hood without picking that cap up (and replacing it).
After having a clutch changed, an exhaust pipe clamp was left loose... slipped down the pipe and made the most annoying rattle that I thought they had given me a bad throwout bearing (but it didn't sound like it). 30 seconds with a wrench corrected it after I discovered what it was.
I had an oil change place put Dexron-III in my wife's 2000 Toyota Echo. Dipstick says to use T-IV. I discovered the fluid requirement a couple of days later. I called them, they said that they didn't have it, that the dealer was the only source. I asked what they would do if someone brought in a vehicle that required it, they said they'd refer the customer to the dealer.
Ya right... they were more than happy to take my $45 bucks, and it cost me over $200 to have the dealer flush the system, which they refused to cover.
Sorry, no thanks. I perform ALL work that is within my physical abilities. It's going to be a tough call in a couple of months when my Tundra will need a new timing belt. $600+ to the dealer and hope it's done right, or a full weekend and about $200 in parts, including a new water pump.
I don't have a lot of trust for dive shop employees or mechanics. I've had regulators completely screwed up by techs with a good reputation. I analyze EVERY tank... nitrox or air.
It ain't rocket science, though the people at the LDS would have you believe that it is, and they screw up often enough so that you might think it is.
All you need is an IP gauge, a bowl of water, a ruler, and some basic tools for setup. You don't need much more than that for proper cleaning... even O2 cleaning.
If I do the work myself, I KNOW it was done right, and I know I didn't get an "underhaul".
Ignoring the possibility of death... if my regulator is going to fail and screw up a $2000 vacation, I'd prefer that it be my fault.