Maya: Export alignment issues. Gaps between two detached surfaces.

http://imagebin.org/35031

(Edit: This next one shows a side by side comparison of Maya to SL, I froze transformation, reset transformation, and deleted history)
http://imagebin.org/35036

In Maya, these three sculpts were aligned to each other perfectly, no gaps from any angle, but when I export into SL, there appears larger-than-expected gaps between them. I'd like to be able to align my sculpts so that there's as little seam as possible (I know it can't be completely eradicated, but you can get close I believe). SL's world position can have up to 6 decimal places of precision iirc, so this is quite a large margin for a gap to appear, the 255 position internal sculpt position aside.

I'm not satisfied with moving them by hand as I believe the computer can get it a lot closer than I can. Anyone have suggestions or ideas? ^^;;

P.S. - At the moment, the only thing that comes to mind is that maybe the last row of vertex data is somehow being ignored- but that's just a shot in the dark.

Updated this image in the first post, I took a simple plane, detached it 2 ways, and after freezing resetting and deleting history, I uploaded and used Qarl's exporter.

http://imagebin.org/35036

I think Domino's post in another thread explains the gap between the top and bottom rows (/8/f7/300449/1.html#post2274192), but the side by side is still a mystery to me.

If it is that, it would affect both directions. Easy way to tell is to import one of the planar sculpt maps into Blender and see if the top and right are half width faces.

http://imagebin.org/35041
There it is, half width on the top and right, I imported one of the plane sculpts Maya generated! But how to get around it.. any Maya users have a modded script or an idea how to get around this?

Hopefully this is all of the problem, but seeing as there's a different sized gap going across than down, I think there might be one more thing.. hopefully not though.

Thanks so much for the insight, Domino ^^