Still foaming after so much effort, adjusting and reading.

[Scotty L.]

All, I'm a witts end. I've added a tower cooler, I've added a resistor and relocated my t-stat. At the moment, a 4 day old 1/2 barrel of Shock Top, beer is approx 37 degrees at second draw, inner temp is about 30-32. I'm still getting 70-80% foam. Ive been roaming around from 10-15psi, I'm in north FL close to sea level. I dont know what else to do. Nest step put the darn thing on Craigs List but I dont wont to be defeated nor do i want to give up my 2 month old kegerator. What else do I do?

Last night I froze a jar of water so i up'd the temp about 4 degrees the morning, beutiful draws last night but I dont want to freeze my nearly full keg. Does freezing the jar of water in the bottom of the kegerator warrant uping the temp? Am I in danger of freezing the keg?

Foam is getting old...

Thank you in advance.