Random lines in engraving

Hoping this is an issue that others have solved. Lines are showing up in my engravings.

Ive tried:

Engraving 0°, 45°, 90°

Checked all grub screws and they are tight,

Rails checked and clean,

Lens clean,

Changed line increment from .08 to .06,

And I’ve run out of ideas.

Using Lightburn

Xtool D1 20w pro, xtool



D1 10w both do it.

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