There's a translation issue between Rhino and Illustrator that is tweaking things JUST a touch, in really odd ways. The curves in Rhino are absolutely dead-on, and I can't imagine what the issue is doing a simple bezier curve translation, but I've been debating what to do about it. I could eyeball the changes in AI, but it seems silly, because they're already correct at the source. Illustrator is also -randomly- rounding one or two edges where the curves are degree-1, G0, so things are obviously very weird somewhere. That's why I haven't put it up yet. I'm working on it.
_Mike