I have recently updated my pre-2021 x-carve (1000mm with Dewalt) with the X-Carve Upgrade Kit. ( New Z-Axis, risers etc. ). Belts were not replaced.
Since the update, my projects are not cutting at 100% scale. The project is about 60% scale.
• I did update the firmware.
• Deleted the X-Carve and re-loaded it a few times.
• Each time reloading the machine X, Y and Z run backwards and I opt to have the software correct the direction.