Shane:  for as long as i can remember Poser has had rounding errors on import/export.

so say i export Vicky, make a full body morph for her, and import her back again. she will have subtly shifted -- usually she rotates a bit on her Y axis but its totally random. we are talking very small movement, but it happens EVERY time. so by the time youre finished a figure, all these cumulative translations add up and it will no longer be symmetrical. this is not really detectable if youre making some major morph like working on the torso or legs -- but start morphing the fingernails or toes and all of a sudden you realize that its not in perfect symmetry anymore.

you cant really test this with the SM figures because none are symmetrical -- i assume because during periods of their development they were imported/exported from Poser. fixing the symmetry on both Alyson and Ryan was the biggest PITA when working with them. and no, its not so simple as hitting 'restore symmetry' in zbrush - it was actually a pretty tedious process :(

RDNA's michelle is perfectly symmetrical, so if anyone wanted to test if the rounding errors are still there with GoZ all theyd have to do is go through the GoZ export/import several times with her, then take her back into zbrush and try and morph her fingernails using symmetry.