[tiermann]

To get proper calibration:
After you calibrate your device manually, you need to export [HKEY_LOCAL_MACHINE\HARDWARE\DEVICEMAP\TOUCH] and then copy the "CalibrationData" setting over the old one in the rgu. Then your screen will be calibrated just like you did it yourself every time. It can go in "Additional Reg Entries" as well to override the default.

All you have to do if you don't want to skip calibration is:
1) uncheck "Skip Welcome" and "Pre Calibrate Stylus"
2) Click "Create OEM"
3) Check the new OEM instead of the old one in buildOS

One of those steps you're leaving out.