[Blender] New faces added to an edited EA mesh have a shine

Sorry for asking but I couldn't find an answer in tutorials, any help is appreciated. Here's my issue step by step:

Start with this EA mesh:


Photoshop out the nametag on the left and badge on the right:



Delete the nametag mesh and create new mesh faces over where the badges had covered up holes:




Insert it all back into s4s, make blank shadow/spec/normal/emission, looks good so far:







But in CAS, these weird shiny bits are exactly where I added new mesh faces:




But in-game it's fine?



I'm just trying to figure out what's causing it. Here's a link to the actual mesh I'm working on. Thanks again for any help or suggestions