After Belt Calibration

After I calculated belt stretch on my Shapeoko 3 XXL, and updated the controller with the new factos, the coordinates that show up in the software are incorrect. If I move the carriage in the X Y or Z axis 2 mm the dial indicator shows the correct distance but the Carbide Motion software reports a shorter move. ie 1mm of actual travel the software reports only .992. I have rebooted several times, shut everything down, restarted several times, same behavior. Is there a way to fix this? Or has anyone else experienced this?

It may be that the formula on the page is wrong.

Please compare with: https://www.shapeoko.com/wiki/index.php/Grbl_Configuration

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