When using spools of Hatchbox on one of the MP Select Mini Spool Holder "Things" you'll need some inserts (Hatchbox_spool_center.STL) so the spool wont drag on the printer tower. I zip tied my "Spool Centers" in since they may pop out during printing. These clips keep the zip ties from snagging on the spool holder arms which would stop the spool from rotating.

You only need two for the job but you can add more if you'd like.

These clips work with this spool holder spindle: https://www.thingiverse.com/thing:2006457

see warning notes below