bobalston,
That is quite alright. You should check out these clippard valves. For the price i'm not sure if you can beat them. The link you suggested was very good.
Thanks. Actually, I was feeling left out of the discussion, despite posting twice. I mentioned using the clippard valve, first I think. And if you looked at my web site, you would have seen lots of info about needle valves and info on my configuration which uses the clippard needle valve.
YOu would also have seen the best valve available is make by Parker, and another one by Parker and one by Swagelock are also very good and superior to the clippard valve. However, the clippard is widely used and a good value for its relatively low price.
Hope you got the system working properly for you, now that you got rid of the valve that was obviously the wrong kind of valve for low volume co2 that our systems need.