To be fair, I only find it needed on stuff above pla, and even then it’s often good enough to preheat first, changed my start gcodes around to preheat before mesh levelling.

Not sure if creality has a macro to calibrate the z axis, totally possible there’s a bit of skew across the x gantry, running the z axis just past its max usually sorts it on my franken-prusa, trying to adjust bed levelling with skew is a mess and made it look like the entire bed was going downhill.