[1.11.2] Spawning Structures - Structure Blocks

Alright so I found this outstanding thread here on the forums: 

That basically provides perfect examples of how to intergrate the ability to spawn structures using NBT data. It is excellent and it works wonderfully. I am having an issue with it though. a post in that thread provided sample code which I utilized to spawn my own structures. Here is the class:

https://pastebin.com/RjzU1Zbs  - generateStructure

And here is my worldGen class: https://pastebin.com/Z64VDCKR (Line 52 is where the alter spawn is)

So it works great and the log does indicate the location that my structures are spawning (yes they are supposed to be rare so that spawn chance of 1 is intentional). However, the issue I am running across is the structures are not spreading out. They are spawning in a consolidated area and sometimes ontop of each other.

Here is the log: https://pastebin.com/7ZEtK4iD

As you can tell the coords are basically on top of each other. I am aware that this is likely beause on my worldGen class my X, Y and Z are in relatively close range of each other. But this is the first time I am working with structures so I can't be too sure. Any ideas on how to spread this out and maybe only make this happen once per chunk so they are not spawning on top of each other and how to make it so they are much more spread out coordiante wise?

Edited August 26, 20178 yr by HalestormXV