Normal map shading issue

I’m having some trouble getting UE4 to display this specific area of my model correctly. It was baked in Toolbag 3 using MikkTSpace with a triangulated mesh. As you can see, the results display correctly in Toolbag 3, however there are issues present in UE4.
I’ve followed this guide with TB3 replacing xNormal

The source fbx files can be found here:

https://drive.google.com/file/d/1HexSyuzQk-MWXeBTz9hEZbWppsVsaapI/view?usp=sharing

Here’s a better example of the issue I’m having.

252978-untitled-1.jpg