Dear all, I have been working on my map's awful lighting and have just rebuilt a set of mine tunnel lights. As this took a while and the map is mirrored I then selected them and copied to the other side. Big mistake! D: Now when I compile I find that some, not all, models are very dark - as if they are not being lit at all. These worked fine before I copied the lights (with the old dud lighting) and all the world and func_detail brushes are lit fine. Has anyone any idea why this is? I fear I'm going to have to throw all my improved lighting away and redo it. Ugh.