I don't know what the minimum requirements to take the class is, but I took it today, and even if I weren't going to service my own regulators, it was a great class to take. We did the regs, the wing inflators (which I already knew how to do) and manifolds, which I had never taken apart. It was great fun, and I have a much more thorough understanding of how the equipment I am using actually works. And luckily, I have local support, so the next time I want to take apart a first stage, I can do it under supervision. (We did two second stages, one being coached and one on my own, and they're much simpler. But there was only one first stage.)
Kudos to Chris for giving scuba gear owners credit for being smart enough to learn to do this!
If you don't mind me asking, who did you take the class with?
thanks!