Have never tried a pork belly, those sammies look really good ! ! !
I did notice that my Sam's has started carrying them, at least sporadically, so it's on the list of things to do this summer.
I don't get quite the time that you do on a load in my SnS, but I'm sure that part of that is the fact (at home) I cook exclusively on my 26. I'm guess it just takes more fuel because it's an exponentially larger cooking chamber.
BD