Asset editor keeps changing fbx unit scale and adding tris

[RaeFromStateFarm 3]

Everytime i set my file's system unit scale and grid settings in 3dsmax and export it into the addons>import folder, the settings remain just as i left them until i open up asset editor in cities skylines and import them. My custom lod can't even be seen because the game keeps shrinking it to be way smaller than the main model even though i set them both to be about the same size. When i close CS and open up both files in 3ds max. the system unit scale and grid settings seem to be different than the way i left them before opening CS. Also the game keeps adding about 2,000 polys, i cant figure out what the problem is