Just lookin at your model and the news is not good.
It seems you have got about 5 extrusions of the same geo on top of each other... This usually comes from extruding on error.
If you still have the full history, find the extrusions. Theres not a lot I can do to fix that appart from going from face to face anf manually delete the addition faces and then apply the texture again.
Chris (formerly R@nSiD)
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Winner SM VFX Challenge 1
3rd Place SM SteamPunk Challenge (May 2007)