Weird lighting issue

[prizeonex]

Hey everyone. I'm working on a project using the Quake1 engine. When I compile the map, I get this weird lighting problem on this one wall (both sides). It was happening on a few other walls, so I deleted them and remade them. It fixed the issue on all the problematic walls except this one. I cannot get this wall to look right in this one spot. I moved it over and it looked fine. I moved it back and the problem is back. So weird:


I'm using Trenchbroom to make the level. Compiling with txqbsp, wvis, and light (v1.43 release 2). Using DarkPlaces engine. The maps is sealed up and everything is fine except this wall. Anyone know what is going on here?

Thanks!