@PRUSA: Sorry, but the belt tension adjustment guide for the Core One Plus is written for users who already have the printer up and running. For kit builders who are still assembling the printer, the first half of the guide is not applicable. We cannot power on the printer or access menu settings yet, and the information a first-time builder needs is missing. This makes the process hard to understand without prior hands-on experience. A dedicated guide for Core One kit users would be much clearer and more helpful.