When the air sensor shows 48 °C and the compost probe at the far end shows 43 °C, that gap is not a nuisance. It measures your air distribution, and it is the evidence DMR asks for when it limits the spread to 3 °C.
Do not average the two and move on, and do not quietly disable the awkward channel. Investigate the load, the floor and the dampers, write what you found, then decide. Nobody should certify compost from a screen in another room, because a screen cannot see a blocked floor outlet.