The new "right click" function on the Vajra is very... Buggy. You can use it to break safes (which crashes a server,) it crashes if you put it in a deployer, and it even crashes sometimes when breaking things like dirt... Could you add a setting to the configs to remove it? It's not a big deal on single-player, but on a server... It causes a bit of a problem when people start smashing each others' safes with them. 
As for the rest of the mod, LOVE it! :3