I am not sure what POSK is....the "K" being "Kamado", I guess, but the rest...?
The 2/1/1 method works perfectly for me doing babybacks. I try to get the dry rub on them the night before or at least enough hours before that it sinks into the meat. As an aside, when I first got the recipe off one of the internet barbecue forums, it was 2/2/1. I tried it twice and my ribs were coming out about the texture of toothpaste. I wrote back in to the folks I had gotten the method from: "What am I doing wrong?"....the reply came back: "Aw, man, that is the recipe for ST LOUIS style ribs....for babybacks , it's 2/1/1!" It's worked for me ever since, keeping the temp between 225 and 250, and keeping a pan of water in the smoker to keep the humidity up.
BTW, the old Kamado smoker was not going to make the move to Denver from Salt Lake- after ten years out in the weather without a cover it had begun to spit off tiles and the top hat was cracked- so when I got to Denver I bought a 72" Lang hybrid reverse-flow stick burner. After 18 months I decided the amount of supervision required for the stick-burner (which otherwise worked great) was just too much and it was time to go back to a Kamado-style smoker.(Doing an eight or fourteen hour smoke for pulled pork or brisket was just a ridiculous investment of time and effort) I took a bath on selling the Lang (which, BTW, was really well made) and then when I considered all the other options, the only one that made sense, despite the expense, was the Kamado-Komodo. No regrets at all- the build quality is amazing and Dennis seems to have made several engineering improvements over the early generation models of other brands. Really can't wait to use it.