Pete,
It was a chuck roast, about 3.5#. I put it on the performer filled the charcoal holders and added pecan and a few some lit on each side. The grill came up to about 250* and I just shut down the vent and lid vent open. The temps stayed around 275* give or take a few. I pulled the chuck at 155*. I did not want it to be pullable thats why I took it off then. I cubed it then added to the pot. Then I cooked til tender. I found the recipe somewhere here I tried to get a link for you, but could not find it again.