Black Cermark on Glass Questions - Beyond the Manual - Glowforge

I recently purchased the Cermark LMC-6044p which allows for black markings to be engraved on glass and ceramic. Utilizing the same products (square shot glasses) I have been having varying results. In the images below you can see the Mizzou logo and the Blues / Cardinals logo came out pretty well, but when trying to do the STL logo half of the image didn’t mark, then with the Ford logos I just can’t seem to get a clean version. All of the images used have been high quality jpeg images and I’ve b

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