I've pretty much concluded the problem at this point is the temperature difference between the beer and the tap. The temperature inside the tower is a balmy 60 degreees (little 5-10 degrees lower then ambiant). So I'm going to figure out a way to cool the tower.
I've tried a copper tube filled with water extending from the top of the tower into the fridge but that is not working. It only lowered the temp about 5 degrees. To be honest I didn't expect that to work.
Next step will be forcing air into the tower.
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