So I got my Geo 2.1 off a member here. Great gun, but it's got some air leaks. I cleaned most of them up with a really good cleaning and O-ring replacement. What I have left is a gurgling sound coming from the solenoid. Also, and this is the fun one, when I charge the gun, air leaks between the frame and reg. I replaced the outside O-ring on the reg thinking that it was just leaking there, but that didn't fix it. I cleaned and dicked around with the thing for about an hour at the field and was about to give up when.... I cracked the reg open and it stopped. WTF?! I degassed and aired it back up and it was leaking again. So I cracked the regulator again and it stopped again. WTF#2?! Now every time I air up I have to crack the reg open and then close it. I suppose it works, but it shouldn't be this way. Anybody have an idea what could be happening?