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So, I'm having a weird issue. I just finished printing these and the first print I did after it printed great without any issues.

My second print, on the other hand, the spool keeps popping up and off the filament holders. Is there anything I'm missing about this that is causing that? I watched it for a minute, and I noticed that as the filament gets pulled in, occasionally one side of the spool is popping off from resting on the ball bearings and then flipping off the holder overall after a few more 'pulls' of that. Is there anything you can think of that would cause this?