Quote - try setting normals forward and see if that helps. Holes are missing or reversed polygons.

I actually just checked the obj in wings3d and noticed there are doubles of geometry names for every part of the figure. So I selected the top one that says head and it didn't select the whole head like it should. It selected the hole (which is visible in wings). Then I selected the second one named chest and it selected everything else but the hole.

If I make the top name invisable the hole shows up (obviously). Is there a way to fix this?