Hmmm ... trying to get to uploading pictures but the second pork butt wasn't as tender or shreddable as the first. I took both to 190F but there's still considerable fat and collagen in the second butt. I could put it in the oven for more time at 190 or 200 but I don't want to dry everything out either. I suppose I could put it in a ziploc bag then put that in a 190F water bath in the slow cooker ... I thought the fat and collagen was supposed to dissolve at about 160?