I have recently purchased a Eizo ColorEdge CS2420 monitor which comes precalibrated by the manufacture. I have checked this calibration using the supplied Eizo Color Navigator 6 software and a Spyder 5, and have discovered that both the Adobe RGB and sRGB targets it produces when set at 100cd/m2, 6500K and 2.2 Gamma are approximately 0.25 of a stop darker than it's precalibrated state. Is this normal ?, if not any suggestions on how to improve the calibration target would be appreciated.