@droftarts @phaedrux Thank you for your kind remarks to my ignorance.
I finished setting up the M671 today. The result on Bed.g looks like this.
Bed image:スクリーンショット 2021-12-07 192441.png
G32Results:G32
Manual corrections required: 0.00 turn up (0.00mm) 0.19 turn down (0.09mm) 0.13 turn down (0.07mm) 0.19 turn down (0.10mm)
Thank you for telling us.
I don't think I could have done so much with my knowledge.