My LHBS only carries 1/4 inch beer line because he says it is the same. I am currently running 10 ft (after failing with 5 ft) to try to balance out all the foaming but am having trouble. It seems the only way to pour a beer with 50% or more foam is to turn down the C02 so that the needle reads just above 0. Still I get a lot of head, but it's better. However, my beer seems to have very little carbonation and boarder line flat. It's an oatmeal stout so I don't expect a lot of carbonation, but still I had it set at about 12 PSI for two+ weeks, before I turned the CO2 down. What's my problem?