Nemrod:
Reefraff, if you teach the course, after the students take the course will you or the LDS sell them the parts and supplies to service the gear?
You already know the answer, so why ask? My guess is that being able to beat a dead horse and troll at the same time isn't a particularly useful life skill but it's still kinda fun to watch you at work, so let me play along...
Like most shops, some parts and supplies we sell to the public, some we don't. Need to replace a fin or mask strap? We'll do it for you or sell you the parts, no problem. Want to de-mung your BCD? We'll do it for you or sell you the stuff you need to clean and condition it, inside and out. Looking to carry some spare parts for minor breakdowns? We've got kits with a bunch of little parts that commonly have to be replaced in the field. Etc., etc. We won't even make you take a class to buy this stuff.
For a number of reasons, we don't sell regulator service kits to the public. Of course, the Equipment Specialist class won't provide you with the knowledge or skills needed to be able to service a regulator, either. Amongst other things, the Equipment Specialist class is designed to provide an overview of how gear works, how to perform routine maintenance, and how to handle some common problems. Though it covers a wide range of equipment, it is not a repair clinic. A good repair clinic takes a couple of long days and will only cover a fraction of one manufacturers line. Most people who complete one are barely qualified to do the work and require support and assistance from the manufacturers technical department or a more experienced technician - a lot of practice is still required to get good at it. Like diving, fixing regulators is something that is relatively easy to do but much harder to do well, especially when things go wrong. I know, some folks disagree with me on this but, with all due respect, those folks are generally better as polemical iconoclasts than they are as repair technicians. I've seen enough regulators come in the shop that were hacked up by folks who decided that self-service was the way to go to: (a) keep us busy, and; (b) make me pretty comfortable with the decision to keep the parts out of their hands.
I know, I know - you're an uber-DIY guy and this stuff makes you crazy and I'm sorry for that. If it makes you feel any better, though I wasn't included in the meeting where the decision was made to prohibit sales of service kits to the public, I'm confident that your name never came up.