On my U2+ printer, I use a small bit of clear plumbing silicon grease on the filament holder spindle (get this from the hardware store/plumbing section). This makes the reel spin easily and the filament never pulls down between the other filament strings.
(You could probably also use silicon spray on the spindle but the grease stays longer. I would spray the spindle with it detached from the printer).
Hope this helps!
Mike
Edited by mike-truly
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kmanstudios 1,120
The only thing I can think of is to try to rewind it so that it does not get up under itself. Those types of tangles are not easy to operate with. When you take a spool off to store, make sure you do not let too much slack into the reel or it will create the tangles you are experiencing. Basically a friction knot.
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