Most likely a combination of things ...fuel and outside temps. LOL, set your mav alarm to something like 200 degrees and not 20*
With our Midwest weather i'd consider a ATC like a IQ because it makes the burn more efficient and you'll get more mileage out of a basket. You know how it is temps drop down 30 degrees at night so a auto pit stoker is just what the doctor ordered.
Mini WSM uds style, Jumbo Mini WSM aka Jimmy, newly renovated Big Poppa Black powder coated UDS, Kettle, Potbelly Stove Smoker Smoke house w/ Smoke Daddy cold smoke generator attached.PitmasterIQ,Guru PartyQ ...Keith