CSG is refered to as the devil by some and even worse by others. Make brushes the hard way. (not that I like to do that but...) it will save you the frustration. (Read the tip of the day thread)
ok, but csg removes any brushes within another one. which should solve the problem. if there is not two brushes overlaping the problem shouldnt exist, but it does. i have just made the building again without using csg and its still there. i copied the problem brushes and paste them onto a new map. saved and loaded it there wasnt a problem
