Darkman

Thanks dragonmaster, I already discovered this a while ago but thanks anyway.
All my models are fixed this way already.

This can be changed to "Resolved" now.

I have added a screenshot of how the model is expected to look like (in 1.13.2) and also a download to the resource pack.
The give command is: /give <player> diamond_sword{Unbreakable:1b,Damage:13} 1