This is a small riser for placing between the top lid and the Elegoo Mars - it adds 2cm (150-170mm) to the build height by raising the lid enough that it can utilise the full threaded rod. Remember to add max z height to your printer in settings! (elegoo mars in chitubox doesnt use the full space as it stops to allow the knob on top of the plate to not collide with the lid. [With this it is no longer an issue!]

I have added a G-Code file to increase the max Z height inside the Elegoo Mars printer settings, please run it once on your printer.