i have checked your process of calibration on my Quad , and in order to test if the calibration result was stored , i adjust the data showed on the 0.5v column to 2.5v when the input was 3.0v, after the calibration , when i input 3.0v , the Quad show max was 2.56 and the wave is about 2.5v , so , the calibration result was stored correctly
as your Quad, i think the calibration result was not stored . so, please try to format the 2M virtul disk(unselect the quick format option ) and try again. and notice if there is a green array : reload patameter from disk when it power up .
thanks .