The title says it all. Where can I find this elusive little bugger? The crew skill trainers seem to jump from 12 to 14. Is it only certain ones that sell it (like the companion customizations)? Any advice is greatly appreciated. Thanks!
Not that data mining sites are 100% reliable, but according to this:
It's available as mods ripped from rare drops.
However, the Resolve Armoring 13 is still craftable:
The Endurance difference is minimal -- you'll still get the same armoring damage reduction.