I got tired of having to remove and put the headrest back each time I had to add/remove the mount (when someone wanted to ride along on track ?) so here's a new version that just slides in diagonally with the headrest in place just pulled up. By pushing down the headrest until it locks it's even held in place better than the previous version.
You find it to download and 3D print here https://www.thingiverse.com/magnust/designs
You find it to download and 3D print here https://www.thingiverse.com/magnust/designs
