FBX import Parts not loading UE4

I’m exporting to FBX in parts, all open in 3DS Max, but a big handful won’t import to UE4 (Unreal Engine). Here’s an example of what I’m getting in the Output Log reporting details why those imports failed:

 

I have the full Output Log from UE4 if needed, doesn’t highlight the failures in red and yellow like the pic. Thanks for advising. I’ve reconstructed this same reconstruction region, a patch in a  bigger model, about three times. Every time a different set of parts won’t import to UE4. Thanks for advising.

I just tried exporting as single part, got this in UE4:

Benjy