Thank you for the photos, James.
What are you setting your digital panel at when doing your tests?
If you are setting it too high (max), you could overdrive your tube and shorten its lifespan. It would be helpful to know how many mA your tube is using at the percentage you are setting it at, so we recommend installing an ammeter. There is a link included for PWM control in that article, which is also relevant.
What are you setting the layers at in LightBurn? Can you double click to open the layer settings and provide screenshots (no cell phone pics, please) of the entire LightBurn window for the file you are working with?
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