I just started smoking a few months ago with my new WSM and have done ribs, beer can chicken, pork shoulder and brisket. Last week I did a small 4.5 pound brisket over 7.5 hours and let the thickest part of it get to 188 degrees and took it off and double wrapped it and put it in a cooler. It had a good bark and smoke ring, but the thickest part of it was a little too dry. It definitely wasn't falling apart through that part of the brisket. I am wondering what I did wrong? I am wondering if maybe I should have wrapped it in foil when it hit about 140 degrees? Would that have possibly locked in some moisture? Just trying to find out where I could improve it. Thanks!