I just bought 4 sets of DR regs.... I'm fortunate enough that the gentleman I bought them from is an authorized dealer and tech for DRs. He said he'd pass the free part warranty to me and give me free services. All I have to do is pay shipping there and back. Priced at 8 bucks a reg, 32 X 2 = 64. 64 dollars a year to get my 4 regs serviced.
I have heard that the warranty on new regs don't transfer but, if you pay for a service kit one time, those parts are then under warranty. Can someone find this out for sure? (I'll see if my guy knows..)