Dive Rite requires training to service the XT regs, but not the older ones. You don't want the older ones though, they breathe like dogs. Updates are required every 2 or 3 years to stay current. So unless you are doing annual service on more than a couple regs, it doesn't work out financially, especially if you have to travel to take the class.
If you want to do the servicing yourself for reasons other than financial, go for it.
-Chris
If you want to do the servicing yourself for reasons other than financial, go for it.
-Chris