i dont wtf happened but now when I compile into any .bsp I get a horrendous z-fight all over the upper part of my map... it only effects the sky shaders...

At first I thought it was due to the borders being a hollowed cube. But then I deleted it and made each border an individual brush , compiled, and did the same thing. I thought it had something to do with caulking... that became a non suspect.. made sure nothing was touching the borders and that my lighting wasnt shining outside them also. Im kinda clueless on this and being 98 percent complete I cant fathom the possibility of starting it back over from sscratch ....><

( this happened just out of the blue one day I did not have this problem the last time I booted the map up to work on, now it just seems corrupted )