Photoscan to UE4 problems/guides

Does anyone know of any good tutorials or guides/best practices for getting photoscans from Agisoft into UE4?.

I have tried various methods and seem to have a lot of trouble with overlapping UV’s or textures
not being assigned properly when they import. The models look fine when in 3DSMax but as soon as I import into
UE4 textures are out of place or not assigned properly.

Thanks!

Please, show us your material nodes.