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Hi!

I'm hoping someone else has run into the same issue and can give me some hints what I might try to fix this.

My problem is that over time, the z-axis positioning of my relatively new Elegoo Neptune 4 Max seems to become slightly unstable. That is, after I level the bed and adjust the z-offset, everything looks fine. However, if I move up and down by a couple of centimeters for a few times, the z-offset is wrong again.

Due to this, I had to restart quite a few prints now, because wrong z-offset leads to a bad first layer.

Now I wonder what I should attempt first in order to fix this?

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this post was submitted on 22 Jan 2026
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