984Mb, that seems way to big. I looked at the Citadel object and overlook items you were talking about and it doesn't look that complex.(10&15Mb respectively) It must be the importing that is blowing the size up . BTW,when you remove unused master objects be sure to save your file, then reopen the file . Then check the size of the file . Good Luck, and look forward to seeing the image when it is done. Mike