Originally Posted by GreenDrake
You know, on mine I put a probe immediately under the lower and the upper grates and noted about a 20 degree difference on the average, so far. I also have a circular cutout from the lid that rests directly on the basket to be used as the heat deflector. Mine likes to cruise right about 230 at the top grate. I don't have the specs on how much lower the lower grate is or how high it is from the basket, I will try to check it out later.
I did not quantify the difference, but there was one for sure, the upper thermo placement made hitting temps many people talk about fairly easy, the lower placement seemed to give a higher temp, and if there was meat right OVER the thermo, it read a LOT lower due to drippings probably ?