Baking problems in substance painter

Hi I hope someone can help.

I've been struggling with this problem for a while. When I model up anything cylindrical in 3dsmax it gives off a inconsistent black bake in substance painter. 

I unwrap it as basic as I can. Seam down the middle of a cylinder and top and bottom. I pack it 0.01 on the uv map and export it as fbx. Any ideas what i'm doing wrong?