First, about that keg:
- When you burst-carbed it, what was the gas pressure, and how long on gas?
- What temperature was the beer sitting at while on the CO2?
- What carbonation level (volume of CO2) are you actually aiming for?
Next, about your serving system:
- What diameter are your beer lines?
- How long are they?
- Kegerator or Keezer?
- Faucets through the door, side, collar, or in a tower?
- What temperature do you usually set?
- Do you have a fan stirring the air inside?
[Man, we really should come up with a template for this]
There are a whole lot of factors that can cause foamy beer. Knowing what we're dealing with gives us a shot at fixing things...
Cheers!