Okay, now I'm pretty sure something is wrong. Last night I was testing everything with a working pressure around 30 and when I unplugged the solenoid, I still get co2 coming out. Today, I was playing with it a bit more and even when I turn the main tank valve off, if I open the regulator, it's still draining co2. Seems like no matter what I do, co2 is still coming out. I'm completely new to this stuff amd of course there are zero instructions that come with these so I'm lost. Only way I can get everything to stop is if I close all 3 valves and have the solenoid off. Any suggestions?