What a day we have had. Unusually heavy rain and hail and winds up to 70 mph. Things have calmed down a bit tonight and I decided to cook a 7# butt.
Got egg stabilized and using the Stoker on this cook. The butt has been on for about 25 minutes now. Indirect on raised grid. Lump about to the top of the fire ring.
Dome is at 247° Stoker & 250° BGE therm. Grate temperature is reading 128° and has kept that apx. 120° delta for the entire time, no signs of the dome and grate getting closer together at this point.
2" away from the meat should be enough not to affect the grate read temperature.
The grate probe is about 2" away from the butt and the height is about 1/2 inch off the BGE Grid.
It isn't uncommon to see a 60° delta but never this high.