@phaedrux
For some reason the Mesh was working today when I first started DWC. I had HOMEd everything but did not do a z-probe. Your question did get me to realize the mismatch of software.
RRF for Duet 3 MB6HC 3.4.0 (2022-03-15)
<just now upgraded to 3.4.1>
Duet Web Control 3.4.1
Everything is figured out and working. What confused me was understanding the M557 wants locations of the probe not the head. I had been giving it head locations and making calculations to be sure the probe remained on the build plate. This bit of information is not clear on the RRF Config Tool.
Thanks