If you intrude 0 in wings it'll produce co-planar normals. This could be part of your problem with the funny faces. But there is a quick fix using Bryce. If you check the "render as solid" option on the object then normal backfaces will not render. Nips it in the bud right there. (Likewise, turning this on can be a problem with some meshes that use hidden faces to hollow them out. Depends on what you're doing I guess.) Great looking render there pumeco. They look like they go together. I'm tempted to use this model too. Looks like something I could use the STR-7 as air support for.

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Barbequed Pixels?

Your friendly neighborhood Wings3D nut.
Also feel free to browse my freebies at ShareCG.
There might be something worth downloading.