Hi dnm,

re:
> does anyone have any ideas as to what I may need to do in MoI to ensure connected geometry

Well, the main thing is if you modeled it as individual surfaces you would want to use the Edit > Join command to glue those together into a solid.

But if it is a solid already there isn't normally anything needed to do to it.

Is it possible for you to post your .3dm model file or e-mail it to me at moi@moi3d.com if you want to keep it private? I can then take a look over it and see if there is anything that stands out as problematic with it.

- Michael