Hard to believe but still struggling to create 2 layers of fake rocks without 1 layer f..ups the other layer. I put down a layer of big ones and then another one with small ones. (Line goes from small stone output into big input) Cannot be more simple but for some reason the small rocks also showing up on the top of the big ones. I tried to switch the order of the 2 stone layers and tried to use the merge node with all kind of settings but nothing. Can someone show me what is the correct flow for this?