I did a rack of turbo BB Ribs yesterday. I cleaned the egg and loaded the KA basket with RW, on top of the leftover RW lump that was already in it. It was the bottom of the bag so a lot of small pieces went in, along with some fines. I got it stabilized at 350-ish and put the rack on for its 100 min. About 80 min in the temp started ramping up without any adjustment on my part. I started closing vents, both top and bottom, to keep it under 370.  The cook turned out fine, but why would the temp start rising after almost 2 hrs of stability? Where those fines restricting airflow thru the lump and when they burned it opened the fuel up for more air?