Added two 4mm countersunk screwholes to the back of the mount.
Distance between both holes: 68 mm (so they sit perfectly nice between the holders)
Support is still not needed, it prints these holes w/o any problems.
→ Will make it myself in the next days, then I'll add a pic.
The author remixed this model.
Added two 4mm countersunk screwholes to the back of the mount.