try positioning a camera on the 'back' side of the prop. This may give you some ideas about reversed normals or holes in the geometry.

The export to .obj and reimport with 'fix normals' sounds like an easy way to check it. I assume this is a single layer mesh. If it is a 'solid' mesh you might have distortion problems between the two sides of the mesh.

Message edited on: 07/14/2004 12:16