Ok got a question on the Fabco needle valve. First I accidently put it on backwards so Co2 was shooting through the system like crazy. I detached and turned it around the right way and now it seems like it's just stuck shut. Kept turning the knob counter clockwise to no avail. Nothing is getting through. Checked everything and all seems fine, and I know it's the valve because it was flowing fine before turning it around the right way. Is the knob needing some adjustment? When turning the knob it doesn't seem to be turning the metal shaft it's attached to. But then again I don't know if it's turning something internal. The thing is brand new so....anyways any tips?