This warranty service thing is just plain baloney! Every time I've had my regs serviced It's been somewhere different each time. I've never been asked to prove where I bought it. If I were asked such a thing I would turn around and walk right out. Send them to LP, ST, Divesports, Divers Direct, Divers Supply, etc.... If you are on vacation and have a problem you go to one of the many dive shops that are at most "vacation destinations" and you pay to have it fixed. What ever they charge will be minimal and hardly worth paying double up front to avoid some fictitious warranty issue. Please........