Hi Pirate Myke,
Before I send you the files, I remade a test tonight with only the "body" of the model first.
Take a look at the screen below :
In the importer, there is no texture problem, even in the level editor.
The visual "glitch" is visible only in game and only if the model use the "Normal" and "Specular" textures...
I noticed a clear zone on the "Normal" texture on the edge of the wall and it looks like the "fitting" is not correct.
It's amazing because with the "Diffuse" texture, the left and right edges of the wall texture matches correctly...
For info, I used "Crazybump" to create the N and S textures...