Now that TIG has explained what is going on in your model... I would offer some tools to fix what has been done. TIG Fix Reversed Face Materials. http://sketchucation.com/forums/viewtopic.php?f=323&t=30107&hilit=reverse+faces+tool Fredo Tools (reverse face orient) http://sketchucation.com/forums/viewtopic.php?t=42089 ThomThom UV Tool Kit http://sketchucation.com/forums/viewtopic.php?t=18992 Thomthom Material Tools. http://sketchucation.com/forums/viewtopic.php?f=323&t=17587&start=90 and there are others too...