^This.
I had the same problem. I thought I was doing everything right. I had a jar of sanitizer with my temp probe in it, and had the kegs sitting in the freezer with about 12psi and about 36f. Not hard right? Well, the beer was coming out flat and foamy. Sound familiar?
Then I...
I am intersted to see how this goes. I have wondered about the seal on my bottles. I do not get much carbonation, but I get some. I also think that my caps come off really easy when opening (compared to comercially capped). I might have to try the 'upside-down' bottle test. I might be...