Why does it cut up the faces

#1 I think this is why I am loosing faces on some of my brushes when converted to dif..

#2 All right I got read of the unwanted cut faces from up above by getting read of the small white corner brush ( this is not a solution just testing to see if that was the problem)

So I started to add more exterior walls and then a new problem showed up after building 3 new walls.. I got missing faces.

Now some people say to make it a detail brush this will not fix my problem infect it makes a new problem with zones it loose that zone.

#3 qxx.planetquake.gamespy.com//bsp/
holodeck.st.usm.edu/vrcomputing/vrc_t/tutorials/editing/detail.shtml

#4 Thanks I have read them many times trying to catch something that I may have missed..

#5 Now when i do add detail brushes to object some times it cuts up the detail brush and some times it done.. I do have 2 detail brushes touching each other is that bad, and they cut each other up..