Summary

I modified the original design to add holes instead of slots for mounting, made the hook slightly smaller and added more gap for the locks to fit together easier. I did all the modifications in Tinkercad and show it on my YouTube channel:

https://youtu.be/T7Zbg_vZRs4

I printed it in Solutech ABS on my Flashforge Dreamer. 0.3 layer, 50% fill.