I generally triangulate using MoI for everything I want to import into Kerkythea. That applied to anything I did from truespace too. If I don't, I can sometimes find additional surfaces in my imported obj. So, when I said K obj import was rock solid, I suppose I should have said it has been rock solid for me providing I triangulate in my modeler first. It could of course be bad modeling on my part. I've attached some example images.