Originally Posted by Toronto
From what ive been reading people with Kamado or BGE type smokers have issues with controllers. Most of them were able to over come it by bringing up the heat extremely slowly. The issue is almost all controllers overshoot your target temp and then allow it to drop naturally but the ceramic cookers retain the heat too well and if the fire is brought up too fast it over shoots way too much and never recovers.
Set it to a less responsive PID and work your way up until you hit an ideal setting.
I reckon I may make P less responsive as you say, and get rid of I and D.
Heating it up most of the way on manual may help.