Hi!
Thanks for your reply!
It’s actually none of the above, but these has also been a problem. And I’m pretty sure this printer and filament doesn’t require a tube, I could be wrong.

It seems it’s the big circular motion, it keeps dragging out a long “string” on the far side and when it comes back close to the spindle it pushes it back and also every round gets another twist in the filament, which after a while “springs” the filament off the spool and gets tangled up..

I’m thinking of maybe make a hanging spool where the spool hangs flat over the printer and the filament can be pulled down and hang free..?

Any help is more than welcome!