Monoprice i3 Mini Spool Holder

I had been using favn1585's Wanhao Duplicator i3 Spool Holder (https://www.thingiverse.com/thing:2897639) for a few months, and was very happy with it, but there was still a fair bit of drag on it. After printing a spool holder for my Ender 3 using 608 bearings, I decided to redesign it to use the same 608 bearings to reduce friction as much as possible. Everything fits just tight enough to not come off on its own, but loose enough to pull off for filament changes. You can add a couple drops of