I’ve been trying to engrave test squares onto a painted tile but I’m having an issue. No matter what power setting I use they always come out either black or white, it never gets shows the color under the black. I cleaned the tile with acetone, painted the tile with 2 coats of rustoleum 2x green (I also tried red), let it dry then did 2 coats of black. I’ve tried several different speeds and power settings from 8-100 with no luck. I’m using an Ortur Laser Master 2 pro. I’m thinking the problem is a setting in lightburn but can’t figure it out. Any help is greatly appreciated!