When installing co2 line onto the solenoid, is there an input side and output side or does it not make a difference which direction you go? I get reduced bubble rate after awhile and when it is powered off at night it does not shut off co2. I've blown it out with 50 PSI co2 and canned air. It will work while testing but when it put it back together, it will reduce bubble rate and not stop bubbles when powered off. I've tested it by blowing canned air through it and my hand on the otherside to feel the air going through and it would stop going through when the solenoid is powered off. I just noticed that every picture I've seen of the Clippard has the needlevalve (output) on one particular hole. The opposite hole that I was using. I'm wondering if the co2 pressure is coming from the wrong side, it might prevent the valve from closing or opening fully. I hope this discription is not totally confusing.