You know thinking along these lines, I have always thought there was a slight Y and X rotation to everything Poser imports or exports. I have thought this from time to time because it always seemed the figures were almost imperceptably twisted off center in Poser. Also every time I export from Poser and then into Zbrush, when I go to resymetry the model, Zbrush always shifts the vertices in the Y and X rotations (and alot of the times it is unable to get full symetry again.)

If this were in fact the case, that the model was slightly rotated but the rigging which is created in poser is not rotated, well it would throw off not only the symetry of the model but also the rig would not match the geometry from side to side regardless of wheather or not the JP's were numerically symetrical.

I'm going to try and test the idea.

Cheers,
Mike.

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A HOMELAND FOR POSER FINALLY