I believe I found a couple of errors in 417. First: when I use the probe function with the 3D Touch probe sensor, the z is off by .11 every time. I have an HDZ on my machine. Secondly: when I go from probing to adjust my z height, the readout must be in metric. Prior to running this routine I have selected imperial units.
It could be me, let me know if I am making some mistake.