Support for UP mini 2 ES. To report a bug, post with a title [BUG REPORT]. To request a feature, post with a title [FEATURE REQUEST]
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I’m not sure if you solved this, but tech support didn’t seem to know what to do when I had the same problem. In my case I cleaned and greased the rods that the print head runs sideways on. I used light lithium grease. Since then I have just added a small amount on a cotton bud ever 10 hours or so.