Just had my two mk10s and mk25 serviced by Mark Jurgan at Professional Scuba Repair (PSR). Great price, extremely knowledgable-talked to me on phone for 30mins about my regs. One reg was in tough condition externally, and came back looking like new. A couple of the regs were sent without plugs in the ports(had lost them over the years) and Mark sent them back with the plugs no charge. From when I shipped them to back at my door was one week total. Can't beat that! Also, as a new customer he picked up return shipping for the first time. Total to get three regs serviced-yoke retaining nut/seat replaced on one- was $113. Highly recommend his service.