Model: - Model properly sized in mm units - Model has no hidden elements, frozen elements, groups, linked objects - There is no trash objects, cameras, helpers, layers, particle view, lights - All elements have 100/100/100 scale and correct normals - No any modifiers in stack except of turbosmooth - Elements properly named Materials and maps: - There is no missing textures - There is no unnecessary maps in environment, background, unwrap modifier - Material editor resetted, all paths striped - Materials and textures properly named General: - There is no 3rd-party plugin used - There is no ALC and CRP viruses - Track View Controllers deleted