New guy here. I am trying to make a water well in the outside area of a Heretic (in Hexen format) map I'm working on. The problem is the top of the well, above the wooden posts, is a skybox/texture that I want to be transparent, but cannot figure out how to get it that way. I know this can be done because I've seen a similar one in Plutonia 2's Map 26 (at the beginning) that looks great, but even though I'm using that as a visual guide, I cannot seem to get the top area of mine to become transparent.
I've copied/pasted the well into a test map so I can post it here without the rest of the map for ease of access. I've also included two screenshots here of what is occurring (from the test map).
Any help would be greatly appreciated!
Test Map: https://www.dropbox.com/s/5yx2fer5qra9r ... l.wad?dl=0

