Galvo new lens scale off

Monport 100mopa, installed new lens f153 110x110, calibrated the lens and the scaling is off. A 1” square in Lightburn engraves a 1.1875” square. Red dot traces the 1.875 as well. Any suggestion on how to correct the scale

after you run 9 point correction there is a scale utility/ calculator to run.

Last step do a corner to corner measurement, and manually adjust skew.

Thanks Ill give that a try

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