I am having a weird problem with setting the z-offset for BLTOUCH (DUET 2 ethernet, RR 3.1.1).
My default z-offset for bltouch in this setup was 1.2mm (y offset is 0, x offset is -20) and I started with that.
But no matter what value I set for the Z-offset, the Height map is shown below the the X,Y,Z grid (see the picture below) and I when I do the G29 mesh calibration it shows the warning that there is a substantial Z-offset.
I've tried calibrating the trigger height using the instructions here, but I am still having the same problem.
When I try the G0Z0 at the homing position - z goes to the proper height I set for printing.
But when I start the print it usually starts way too high.
I tried both lowering and raising the Z-offset but nothing seems to solve it.
I also have dual-z leadscrews with dual motors - set to do true bed leveling for the x-axis.
Does anyone have any ideas?
Here are the config.g, home.g and bed.g attached
config.ghomez.g homey.g homex.g homeall.g bed.g