ok...first of all, GOOD JOB!
i took a look at the files and found a couple of issues.....
first, the fxsxml file had some roman legion stuff in it, that may have been causing part of the problem.
next, your blend to fbx export was not "exact".....the model name is cAp_SeNsItIvE, so writing WORLD_Center will cause the model not to move....took me a while to figure this one out....in this case, it is World_Center"
the other thing I noticed was for some reason, your dds file was not showing. i loaded the model in asset viewer and got that white and red checkerboard pattern thing.....i noticed that your dds file was "off" on the usual kb size, so i just resaved it using the DXT1 RBG (or) the DXT3 ARBG and IT WORKED!!!!
i dont think the sref file has any thing to do with the file not working in game, but it is easy to make a proper sref, just take your normal color dds, chage the name to the sref, copy and paste as new layer, darken the new layer and erase the areas that are supposed to be "shiny"....
check out the pic on top that illustrates the steps i've mentioned
you will need to go back to your blend and do a proper/corrected fbx export
i have also included a 7z with the new dds, sref and fxsxml for reference...
GOOD LUCK and keep at it!!!