Settings>System Editor

Edit config.g - locate line M665, usually about 10 or 12 lines down.

Artemis 300 set L to 340.5 (L340.5)

RostockMAX v3.2 AND v4 machines set L to 340.5 and H to 350.

If you do not change the H value, the machine will crash into the glass before being able to probe. The carbon fiber arms are longer than stock arms, shortening the max Z length.

The arm length value is a starting point. Although the arms are made in a precision jig, there may be variances and this value may need to be slightly adjusted if you are looking to print parts with specific size values. Adjusting and re-calibrating may be needed to tweak the final print size output.