I'll give that a try.

I was going by Kai's instructions in this video:
https://www.youtube.com/watch?v=AAT0m-BAPvo&t=232s

At 2:18 he says specifically to use the 2011 Binary FBX format.  He also is embedding the textures.

Same with this video (2:13):
https://www.youtube.com/watch?v=uuhCCgJQHYk

I'll give your instructions a try, however.

Yeah, Kai doesn't know that much yet about Transformer (he'll learn, though).

Do what I said and let me know how it goes.

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Alienware Aurora R16, Win 11, i9-149000KF, 3.20GHz CPU, 64GB RAM, RTX 4090 (24GB), Samsung 870 Pro 8TB, Gen3 MVNe M-2 SSD, 4TBx2, 39" Alienware Widescreen Monitor
Mike "ex-genius" Kelley

So, I tried it with Binary 2012 and WITHOUT embedding the textures and I still get the shiny hair (Metalic maps added and Roughness inverted).

Deleting the Metalic maps and inverting the Roughness maps once again fixes things.

The mystery continues!  :D

Okay -- there will be a patch coming soon and when it comes please let me know if it fixes things or not.  If it does not, then we need to investigate further.

Thanks for trying.  At least you have a workaround for now.

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Alienware Aurora R16, Win 11, i9-149000KF, 3.20GHz CPU, 64GB RAM, RTX 4090 (24GB), Samsung 870 Pro 8TB, Gen3 MVNe M-2 SSD, 4TBx2, 39" Alienware Widescreen Monitor
Mike "ex-genius" Kelley

Yes, I'm thankful for the work-around.  God is very nice to me.
I appreciate your help with all this!