Could you share your settings for the wga?
Tried this weekend with the mini but didn't really succeed.
I put the max fan on 25%, P=1, I=0, D=0
The bge went to 150C initially with setpoint at 105C and didn't manage to drop temperature for the next 3 hours (fan speed 0).
Perhaps I should decrease the max fan next time. Looks like it's almost impossible to recover from an overshoot...