Appreciated o7. I’m trying to set up the HISMC_grid like you were talking about. At the same time, I’m trying to set up draw lines to support negative and positive Z axis, to see if either will work. I need to find a good tut on using these HISMC meshes. I don’t think my code is correct. It’s not instancing any meshes that I can see, with the HISMC.
I’m going to go dissect your new project so I can see what you changed. 
I’m curious as to how I set up wrong. I was sure I had it right.
[EDIT] - Now I get it. The incline was it’s own separate function! That’s why it wasn’t working and causing the grid movement to lock up and freak out!