YFan, if you see foam after beer sitting in the line for a 1/2 hour or so it is usually a pretty good indication that the beer sitting in the tower is warmer than that coming out of the keg. Seems the only way to solve this is with a blower (blows the cold air up into the tower), the "dumping of foam" technique you employ, or the TopGun way. TG, strange you are having so much foaming with the Sams, I have run 2 kegs of summer and an Octoberfest of theirs and had no real problems.
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