Once again the "search" function saved me a bunch of effort. Tried pulling a glass after 6 days from my first keg. It had sat at 12psi with the keezer set to 40F. Came out in a moderate trickle, small foam head that was more like I was running nitro, and very undercarb'd. Swapped lines over, pulled the valves and dip tubes from the keg to inspect and nothing. Even cranking the CO2 wouldn't make it come out faster.
I didn't notice anything removing and refitting the "out" tube like I would have assumed if the beer was freezing up but I trusted the threads. Moved the keg away from the wall of the keezer and raised the temp to 45F and it pours fine now. Guess I need to throw a small fan in there to help things out.
So if my problem is fixed why am I posting you ask. Well I have a leak in my water main in the front yard, I have to dig a hole and it's cold outside, so I'm stalling. Don't judge me!