Here is my skp file.
https://drive.google.com/file/d/0B-YXP5IFQe59VzhMX1VjUWNrdm8/view?usp=sharing
My style is the default style, the hidden line mode is off. i just turn on the monochrome style to check if my model have any backface showing on the outside. Its just super weird to see some object is fliped in 3ds max even though they have the same material and all correctly face outside.