Hi there.
Are you looking for the Rotation Radius setting?
It’s the measurement from the center of the bit to the chain attachment. Calibration should calculate that number but’s currently not doing a good job on the math. I think you need to deduct that ~ half chain link used to mount the chain.
To reach the setting click on --> Maslow Stettings --> Advanced Stettings
It would be interesting to see what you measure and what number the calibration comes up with.