I'm down to three sets of four clips on my timer. I have minimal hot coal during extended idle.
My stoker screw is out about 7 or eight turns.
I've been burning 80#/day during January and had a couple days of 120# when the temps were very low.
My ash is pretty much the "granola" texture with very few pieces of unburned coal.
Keep in mind the clips and timer only make a difference when the stove is idling. When it's cold out and the thermostat is calling for heat, the timer, although still running, has no effect on the stoker time.