Looks great, I do a 270#(alive) one every year for our town on the 4th of July. I buy it on the 3rd, butcher, scald it, inject it, tie on wire rack and then put it on the block oven about 3:30 am on the 4th and keep at 225 deg. It is 170 deg. clear through by 11:30am Take it off and let it rest for a half hour and then serve. I would sure like to try some of your 20 hr slow cook.