Hmm. Well I know that if you don't disable smoothing in both render settings and properties you'll still get the shading problem I'm thinking of. It's how Poser utilizes phong smoothing... It causes specularity problems ( i.e. uneven lighting across faces) unless the models are made with control edges or each connecting face is unwelded ( an old school Poser workaround that looks terrible). Smoothing groups can also be used to circumvent this problem. I can link you to an old tutorial about it I did here on the forums ages ago but I think you've figured it out. Interested to see the solution, take care.

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