Can someone please tell me how to nerf this mod? I am making a modpack (only for 4 friends and me) but this is quite an OP mod and I would like to make it more difficult to obtain certain ores or materials without changing the recipes or disabling things. Any help is welcome (Example: in config line 128 change the value of ore spawn ratio for something lower)

(Also sry I don't know where to ask this I think this is a thread for issues not just bagging for help)

You can change the ore spawn rate on the configs, even limiting the dimensions on which they can spawn, you can also use https://www.curseforge.com/minecraft/mc-mods/crafttweaker (CraftTweaker Mod) to change the recipes of every crafting you think is too easy. Anyway as you already know this is a Thread for Issues, and you'll get answers much sooner if you got on any forum that is made for helping people out :)

I would recommend looking for a community around building modpacks. They are probably better suited to give you advice about balancing a modpack itself. Especially as not everyone considers only reducing drop rates as nerfing or more difficult when every other balance option is already excluded.