@geeProbably the beginnings of this happening:
Happens to every Ender3, especailly if you run high tension. I'd order up a cheap BMG clone like this one and swap the thing out.
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Know if you need to do any sort of calibration with this thing to use it? I got one and hooked it up and I haven't been able to print anything since. First layer is just dogshit. I can't seem to find anything about that, but I've never had good luck with install instructions and such