I've noticed that some mods don't register their weapon items as weapons, and the toolbelt tries to correct that every time you tried to hit something with said weapons. One example would be the Primitive Club from Alex Caves, and the spears from the Simple Spears mod. I think this could be solved if we could add this items to a list that prevents them from being affected by the toolbelt. And maybe having a option to disable the axe from being used as a weapon from the toolbelt would help too.