Hi Jonah,

> Do you also want the Modo test file?

Sure, that certainly might come in handy for testing as well.

If you did have a big n-gon at the top there with the MoI export, then that is most likely to be the single biggest difference between the Rhino export and the MoI one. That would mean that Modo wants to have an actual poly vertex at that central spot to make it work correctly, it is otherwise trying to some kind of interpolation across a polygon which is not working right. Right now that is kind of my best current guess but not verified of course.

- Michael