To cut the flat parts I will use my MPCNC.
The leveling issue is really weird, I can’t explain it very well. Everything is flat, the carriage plate is new, the glass plate has no warp but still the machine is totally inable to level when using 4 screws. When using 4 screws 2 of the screws level just fine, but if you try and level the two others they just ruin for eachother, making it impossible to use both. When using only 3 of the screws I can still print on ~30% of the printer, but that is a quite small area. Am planning to just take absolutely everything apart and put it together as from the factory to see if that would fix it (which it probably wont, but I’ll give it a try).