Well, I am very pleased to report that it turned out GREAT. Maybe the best I've done yet. Good smoke and delicious, crunchy bark. Moist and tender. Everything I could want in pulled pork. We made sandwiches for dinner on big Hawaiian buns- mine with a coleslaw base and some good Johnny Harris's barbecue sauce. It was make-your-eyes-roll-to-the-back-of-your-head-and-see-god good. Haven't had that experience since the last time I wen to LA Barbecue in Austin and had the brisket sandwich. I think this is the recipe for me from now on. Interesting that there was such a variation in cooking time required for each of the four shoulders. I suppose variations in size and weight and maybe moisture content are the explanation, but one was at 203* at exactly 10 hours, as planned, and the last one took 11 1/2 hours to reach that temp. Interesting.....
Since we had the smoker going, threw a chicken- halved- and a few breasts on there for good measure. Haven't tasted any of them yet.