Originally Posted by slowerlowerbbq
I have been trying to run mine at 300* in competition, but even though I can usually get it up to temp, it never seems to stay there. It never fails that after about 1-2 hours the temps start to creep down until it settles at 250. I've tried adding a chimney of lit charcoal, adding lump, the temp will go up and then creep right back down shortly after.
Currently, I am cooking with briquets and I have a feeling I need to go with all lump for these cooks. Unfortunately, lump has been near impossible for me to find anything around me.
Sounds like the fire suffocates under ash. I think you're right about using lump instead.
Consider also that the 22" loses lots of heat over its large surface area, an insulating jacket would make your temp easier to hold.
[COLOR=green][B]XL BGE[/B][/COLOR], NBBD Offset, 3 Weber kettles, gas and electric cabinet smokers, and a few smoker projects waiting