On the issue of jack placement, I put my jack in the back panel below the vent. I've seen others put the jack in the same place, in the vent, and now, with happyfngy's, in the side, but up high. I put the stove just behind the center pole and turned a bit to avoid the pole. But I have moved it around and don't find that the jack position impedes moving the stove to another position somewhere near the center pole--so long as the center pole isn't between the stove and jack. The stove damper (I have both Ti-Goats and Kifaru's) allows the pipe to exit the stove at 15-20 degree of lean. Just my experience to assist those about to sew a jack in their SL-4/5.
