Ah I see. I'm beginning to think it might be hardcoded too

I was able to easily remove durability from items so that I don't have to repair them anymore. But this one has me stumped.
But I suppose it's not that important, it's just one of those 'quality of life' mods (like unbreakable lockpicks :P) that make the game less annoying.
Anyway, I'll play around with Norbyte's save game editor to see what I can find. But I'm starting to think this mod might not be possible

But big thanks for taking the time to look into this for me, I really appreciate it.