I didn't have enough adjustment in the bed frame screws to level it in the x-axis and it also seems a bit off in the y-axis. Is this really just taken care of with mesh bed leveling? For a printer of this caliber, that seems unacceptable. Sure it works, but parts will never have walls perpendicular to floors/ceilings. So, has anyone dealt with this? I guess my initial thought is to use washer shims under the plastic standoffs. That should get me within 25 microns, and then I don't need mesh leveling as long as my build surface is flat and there's no sag of the xy gantry. Also, are we using the nozzle as the Z probe with the duet's stall detection? What's the repeatability?