Hi! The problem has been solved. I have loosened a little the screws that hold the pulley against the rod and now is working well at 100% of the ...

Wow! good job! One question: Is this material melamine? If yes, which tool did you use in order to have this clean cut? Thanks, Javier

Hi! How did you solved it? I stil having the same problem in X and Z I should unmount it again? Thanks, Javier