OK, here's what the "Mares Limited Lifetime Warranty" says, that came with my two regs:
Mares warrants this regulator against defects in materials and workmanship for the lifetime of the original woner, with the exception of mouthpiece, hose, O-rings, filter or valve seats, which are warranted for 2 years. During the first two years, Mares warrants that all parts of this regulator will be free of defects in materials and workmanship. Mares will at their option repair or replace any components they find to be defective. This warranty does not cover regulators purchased from any source other than authorized Mares dealers. To activate this warranty you must complete and return the warranty registration card within 10 days of purchase. This warranty will maintain in effect for the lifetime of the original owner. To present this lifetime warranty, however, it is required that maintenance include an annual safety inspection be performed by an authorized Mares dealer or by the factory. This service will include disassembly, cleaning, replacement and lubrication of all O-rings and seals, and safety check at the expense of the owner. To obtain warranty service, you must deliver the regulator to Mares or one of their authorized repair facilities. If you send the regulator to the factory, you must pay the shipping charges to the factory. This warranty does not cover damage or defect due to neglect, misuse, alterations, or attempted repairs by someone other than an authorized dealer. Chromed or plated brass components are subject to corrosion and require as a minimum reasonable mantenance fresh water rinsing after use in salt water and proper storage as described in the owner's manual. This warranty applies only to regulators purchased through authorized Mares dealers.
Maybe a lawyer can parse this, but I agree with Abitton. If I had a Mares regulator purchased from an authorized dealer (which I have two of), I would expect parts
and labor to be taken care of if there were a defect. And I would assume "authorized repair facilities" to mean all qualified Mares dealers worldwide, that have qualified technicians.
The only issue may be whether Abitton's problem represented a defect (should you expect a regulator "out of the box" to be well-adjusted?), or whether it's the fault of the selling dealer who neglected to bench-test the regulator before sending it out. If the latter, then maybe only that dealer
is responsible for fixing the adjustment.
--Marek