The first i've already posted about. It the debug from "UV is jacked". it's only inside and directly outside these base structures. i can't find anything wrong with the UV's and i've welded all vertices with low value( 0.1-4.0) How do i fix this?

Second pic is just top view of the map. I used the +exactportal material in the 2 slim tunnels connecting the three main areas. tool says "portal outside bsp". what does that mean?

also:

what is a z buffered triangle and how do you fix it?
how do you fix clipped to no leaves?