Z layers
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Why can there be such a jitter of layers on z?
https://photos.app.goo.gl/pJbozpBJHuKgDSB88
https://photos.app.goo.gl/CMbJmhozfWPk79iHA
In my opinion it started after titan aero ..
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It's possible you have a broken bearing on either end of the large drive gear of the titan aero. It's very easy to over tighten the bolt.
