At the moment, until we get a proper modding workflow sorted out, I will have to import the meshes myself and set them all up to work with the UE4 system.
I’ll need the source 3DS-Max and/or .FBX files so I can get them in properly.
please email me at: hamish@camshaftsoftware.com w/either the files in the attachments, or a link to download the files preferably somewhere reputable and easy to access, ie: dropbox, mega.
It’s not elegant, and its not easy, but it’s what we have at the moment until we get a proper modding tool chain set up 
If you’re uneasy about sending me your files: thats understandable, just hold off until we get a proper system in place.
Until then, this is what we’ve got