I'm commissioning my BigBox 1.1 dual hybrid which shipped with RC6. The Printer Commissioning section states that for dual hybrid one should mesh level. I follow the steps in the manual: Via the Prepare menu, select Level Bed. The BigBox will home X, Y & Z and then move to a position approximately X10, Y10. Instead of stopping at X10, Y10, it traverses around the bed with the IR flickering and stops near the rear right corner X289, Y184. Exactly the same as shown in the auto-bed leveling. How do I select the mesh leveling from the menu?