Before I say anything else, thanks for all your hard work. I appreciate your efforts and think you are doing a great job managing this chaos 
Installed:
Complete.
Here is the computer web browser’s serial log (the tablet came out differently so not sure what that is all about…)
cal-04-19-3-new.txt (15.6 KB)
tablet log picture I’ll see if I can figure out how to copy it all out.
Observations:
Still not great result for me, but much nicer to manage! still need to tend belts on the first part, but the second was great.
I’ll look more at the results and your calibration code after a bit and give more feedback. I’d like to run these numbers again in the ui tool, but probably need updates for that.
Also I still need to get dinner. I couldn’t wait to try this, lol