Star told the tech last year when he called on mine that a 10 degree differance from d/side to pass side was normal.I told him to tell STAR to bite my butt that all they were doing was using that as a excuse.I left and bought TWO ac thermeters and the differance from side to side has never been more then 3 or 4 degrees.Even while FREEZING up its stays the same.Mine freezes high or low fan.