Too much Npc

Hi, i have too much npc at the junkpiles. Sometimes 2-3 Heavys +2-3 scientist + a mummy. Where to reduce that or prevent them spawn? I want only the decoration and the standard amount of scientist.

This is not the plugins fault as it only spawns the decorations and no npcs at all

Changed Status from Pending to Not a Bug

Sorry, my fault. Played with the max/min spawn and density. This cause it.