Hello, I currently have a little problem I would like to try and fix. I want to know if there is a way to change the spawn rates of non passive mobs. I looked in the config folder but the only config has nothing i can change that will help me in this situation. I have looked around and seen people saying look for "Mod_Aether.cfg" but that file is not in my config folder. Only a file named "Aether II" 

Any help regarding this issue will be greatly appreciated, thanks.