Until I can get the parts to convert my mini fridge to a kegerator, I am just using a picnic tap. I am using 3 gallon kegs and my serving line is about 7 feet long (I read a longer line reduces foaming). I have noticed that after pouring, the bubbles will rise to the highest point in the line and get stuck in a lot of places. If there are bubbles trapped in the line, will this cause foaming when I go to pour? I kegged this last night and set it at 30psi for about 20 hours at 38*. When I pushed it out at 10psi I got quite a bit of foam. The level of carbonation seems to be right, but I am still getting a fair amount of foam. Any suggestions? I have a 4 foot serving line aswell. Would hooking that up make a difference? Thanks again everyone. Are 3 gallon kegs more finicky when it comes to this type of stuff?