The surface probes are only measuring the air up front but I think It truly is hotter near to the firebox. This was soon after smoking cigarettes a eight lb butt in only eight hrs at 220 supposed temp. I go the butt near the front my 2nd cook and https://old-country-bbq-pits-acad69911.dm-blog.com/14225378/top-old-country-bbq-pits-over-and-under-smoker-secrets