For what is worth, I am using a 5x9 cage on essentially a diy rotisserie spit, in a 12" terracotta pot as an enclosure. My heat source is a Wagner 750 heat gun, with the duck bill attachment, blowing through a port cut in the side of the pot. The pot is covered during roasting so aside for one...
So I built a very hacky drum roaster for home use, and I'm running into an issue where my beans will hit first crack just fine, then they will stall and eventually burn before I ever hear a rolling first crack phase. I've encountered this with a wide variety of beans, mostly from South/Central...