When we bitched about it running warm years ago...MADIS confirmed the drift. Then we noticed it looked better...MADIS confirmed. Then you noticed it was getting out of line again...MADIS confirmed.
June '18 to Feb '20...ran 2F warm.
Feb '20 to Feb '21...close to expected
Feb '21 to present...running 1-2F warm
There's a lot more drift in the high temps since the end of 2019 too. Makes me wonder if there's some radiation issues. Using the CON black mulch?