Reviving an older post, I know. I'm using a LK5 Pro, the nozzle drop down box only gives me the 0.4mm option. In machine settings there isn't an option to change it in there also. I am under the impression that this printer is basically a copy of a CR-10S, which DOES give me nozzle size options. Seems there are g-code differences between Longer and Creality that would cause problems. Or is there a way to ,ake a completely custom printer profile where I could set these options?