I know this is an old post, but I am amazed at your bus station, and was hoping to get a pointer from you. I've been using ldraw [mlcad] to generate my minifigs, but when i convert them to .obj files so i can import them into maya, the roundness of the minifig heads are replaced with angled polygonal surfaces. did you build your bus station in a similar manner or did you use something else? any guidance would be greatly appreciated. again, beautiful work.