I just kegged up two batches of beer, changed all the orings and used keg lube. I tossed them in the fridge and set the pressure to about 30 psi, the tank pressure was at about 800 when I put them in and after about an hour it has gone down roughly 100 psi so I disconnected everything and went around and tightened all the fittings again, snugged down the regulator a little more then I would have liked actually since it's brass. Does it sound like a leak or is the beer just absorbing that much? I am going to let them chill for a few hours and do the rocking bit then turn off the gas overnight.