As per Aidan, I set all 4 of the LOWER RH RTD channel calibration gains and offste to their nominal setting. Likely these were not input after the summer vent or they were over written sometime since. Settings for all 4 should be:
LOWERRTD_GAIN = 50 (K/V)
LOWERRTD_OFFSET = -257 (C)
One arm RH calibration medm screen shot is attached.