harukadev Hi there! So, i'm new to modding and I can try to make it use config lib or something like that in the future. No promises tho.
But you can change it manually if you want and here's how:


Unzip the NoWasteBloomery_1.0.0.zip and open the folder, then go: assets -> nowastebloomery -> patches -> nowastebloomery.json
Now in this file you need to change quantity values for "avg" and "var". (average and variance)
For exemple, if you want it to only drop all the materials sometimes but not lose much, you can try ("avg" : 7 | "var" : 1) Sometimes you will get all 8 bricks, sometimes 7 or 6. You get it? 
There are both parts of the bloomery there, so change both to your liking.

Now you need to zip it again and replace the original mod file or delete the original zip file and leave only the folder you've extracted.