Auto the DRO's to zero after a Ref Home. It used to work fine, but quite a while ago, as I have been away from this for some time.
I've also had to reconfigure the machine but the same settings have been used.
So irrespective of what the DRO's show, after a Ref Home (either individual or all axis), when this setting in Homing/Limits is checked, it
should, automatically zero!
At least it used to do that a while ago!