Model originally uploaded to Thingiverse at https://www.thingiverse.com/thing:3144013.
I've been having problems with feeding material to my new MMU2 so while waiting for a solution on their forum I thought I would adapt my current moisture control solution for the MMU2. I found the the thing this is based on and adapted it to create a flange to hold the PTFE fitting (same as the original http://a.co/d/bXJCLVm)
I bought some more PTFE Teflon Bowden Tube http://a.co/d/efHZAR9 and set it up with break in the tube to allow the MMU2 to retract the filament.
This actually seems to be working great. Not only does the filament seem to be working on all 5 feed tubes, I now actually have counter space!
The single spool holder is https://www.thingiverse.com/thing:2926059 My remixed double version that works with it is https://www.thingiverse.com/thing:3144008
I used M3 screws and hex nuts... the same as Prusa uses.