Mike, i have a the Big Steel Keg using the follow setting for a long time
B=0
P=12
I=.004
D=7
I use dampener and no fan.
For low and slow 225 keep top set at 1.5 to 2.5 depending on wind. If going hot 275 or up I open it up to about 3. I only use lump, large chunks on bottom, small on top. I...