Oh, I see. Didn't realize flat mapping was a top shader option. Still, even with that you have to add a flat-mapping channel to each subset on the tree.

Layers list works just the same though. I don't think there really is a right or wrong way, as long as the end result is what you're wanting.

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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.