I bought the Wisepro filament buffer to help with the length of the PTFE tube I was running from my drybox to the Core One, but to my surprise, the bearings that retain tension on the filament just fall out if it's not mounted in one specific orientation…not great.

So I made this to retain the ball bearings when the buffer is used in more unconventional orientations.

Installation is simple, just remove the 2 screws holding in the old bracket using a H1.5 hex key, place the replacement plate, and screw it back in. No fuss, and the bearings stop falling out.