Keystoker 90 Econo Setup/Draft ?

So I have been running my new keystoker 90 about a month now, really enjoying the coal.
Finally hooked up monometer and it says draft almost -.015 on idle (wasnt sure if I did too long a piping run on monomoeter) this reading is from the hole on side of ash door so a beloq the fire draft reading Its mid 40s and raining today. Ive had no issues it seems but seems this draft a little low?. Ill post pics of setup, its through the wall, chimney about 3ft above peak roof..nothing else around

Setup


Fire at just above idle, as I think was just starting a timer pin cycle


Same pic with flash


I do have 3 diff co detectors, closest within a cple feet of stove...they have never alarmed
Thanks

I assume you Zero'd it out.

Is it a power vent or natural draft chimney? Do you have your baro damper set correctly too if you have one. adjusting that will vary the draft on the stove too.

At Idle, your draft will be a little lower, less heat up the chimney, lower draft. .02 to .04 is typical and depends on your stove, chimney height, outside temps, etc...
The colder outside, the draft will go up a bit.

your reading sounds about right at idle at the temps. are you reading it to the left or to the right, you can switch the ports so it reads to the right, thats what most of us do.