i put together a keezer a while back and i've had an ipa in there for about 3 months. the co2 has been set at ~12psi the entire time. i started with 10' of 3/16" beer line from keg connection. it was obvious that the line was too long, so i started trimming the line, 6" at a time. it finally got to a point where it will develop a decent head, but there doesn't appear to be any co2 suspended in the beer. from reading other posts on here, i gathered that the line was still too long. so far, i've trimmed it down to 4' of beer line and there has been no change. it will develop somewhat of a short-lived head, but there are no co2 bubbles in the liquid beneath the head. can someone tell me what the hell i'm doing wrong or point me in the right direction? PLEASE!! i've got 3 more batches to brew and keg before i start law school in august and i would really like to be able to drink carbonated beer in between study sessions.