Question about carbonation levels when bottle conditioning. I use a priming calculator so my measurements should be on par, then I boil the priming sugar, rack on top and bottle. 2 to 3 weeks later I'll pop one into the fridge for a few hours and I get a perfect beer. Lacing, head. Yet when I leave the beer in the fridge for a day plus, the thing comes out flattish, hardly any head, almost no lacing and tastes close to flat. What the heck is going on? Clearly my sanitation is good or it would be flat before the longer fridge stay. I primed to spec, so I am annoyed and perplexed as to what's going on.