while turning back my megaminx Earth the cube got scrambled and I didn't realize why. So I tried to fix the messed up part of the cube, only to see that my light yellow 0-face was turning now as a 1-face most of the time (not allways).
Should I look for the center part and sand it more round? Turning the screw had not much effect....
Thanks for helping,
A 0 centre piece has to be stationary, right?
The pentagon connects to the core and the screw has to be tightened enough to avoid rotation.
I have not disassembled my Earth any further to take this picture, but when I reassembled it and had not tightened the screw, the circle turned.
I do not see how sanding the centre piece can help. Have you tried to get the screw really tight?
I have used the opportunity to get some training, before my Uranus arrives which is complementing my Earth to make any of the planets.