Dutch - 2/17/2012 10:32 PM
Mares parts are notorious for not being cheap. If you are diving nitrox, they will use Christo lube to lubricate the o-rings when doing your service. Christo lube has the nasty habit of caking after around 100 dives or two years. Atomic gets around that by loading the first stage with it so that it does not "dry out" and continues to lube long after others have caked badly. If you are not diving Nitrox, demand that the shop use silicone and not Christo lube. When you decide to start with Nitrox, have the reg serviced and set up for it again.