Love richieclarkie's Thing, but not a fan of supports. So butchered it in Tinkercad with a view to remove supports
Your mileage may vary based on your printer tolerances
*v1*
OK but I created my own problems by printing on 2 different types of 3D printer and using ABS for the wall mount and PETG for the holders. As such the holders were slightly bigger the the hole for them in the mount or vice versa (bottom holders mainly). Which mean the clip was too small
. *v2*
Shaved off roughly 1mm off the bottom of the model and made the clip 9mm wide
Holders actually fit properly now. Clips aren't great but functional
The author remixed this model. Imported from Thingiverse.