Ok Im working on my map Archao and have came across an odd problem. Some of my brushes are missing a side. Basically on some brushes a side that should be textured is seethrough

I have done the usual checks of possibly having doubled the brush. There is not. And checked for any random entities being linked with the brush. No.
Im stumped for ideas about what's causing it. Any help is very much appreciated.
And also My water tunnels are having a slight hiccup also. Currently where the water brushes touch I'm getting a white grid texture. In Radiant both white grid areas are "NoDraw" and I took that advice from Bubba's Mapping Guide. Does anyone know the solution to this problemo


And Archao shall be tested soon on a [T] server. Thx to the twins.

-GrandJob