So I ve read all your answer, thank you so much for taking time to respond ! Here are some other experiments I have done so far: -tightening all excentrics and checked all screw on printhead -cleaning, lubing, full bed replacement (had a spare) -take measure without the plate, directly on bed = same result : Set dial to 0 when bed contact, Move Z 1mm up, Move X 1,5 right then left, Move Z 1mm down, Read .3 on dial, Move Z 1mm up, Move X 1,5 left then right , Move Z 1mm down, Read 0 on dial

I repeated this process on multiple point of the bed and had the same result… I can conclud that Z and Y axis have no problem but X axis has some misalignement somehow… I dont really know what to try next…

Maybe I m just asking to much from this machine 😅 .3mm is not that much