Lightburn with SnapMaker 2.0 350 for Etching

I have worked through some of the A350’s laser problems and have been testing etching on book cloth. The attached three images will show the settings I have used and the few points of charring that occur on this test sample. I’m heading in the right direction, but need someone with etching experience to tell me if I need to push the parameters further.

I have already decided that I’ll have to make 4 passes each a bit deeper than the other. The goal here is to have an etched title without any char.

Cuts-LayersZ7A-SM2 Lightburn-Cuts - Layers Cut Settings EditorZ7A-SM2 Lightburn-Cut Settings Editor

Thanks for any assistance available.