IIRC, you need to open these files: https://developer.valvesoftware.com/wiki/Material VMT files will contain your Gloss number, color, etc. just open them with a Text Editor. I know at one point Valve mentioned you could make and modify your own VMT files, but not sure if they still put in support for that.
Just letting you guys know there is an update coming VERY soon :D This release should be super close to the in game shader! (Orge Magi of course!) Specular Warp! Here's a list of current changes. List will be modified :) Changes in Version 2.3 ( as of 1/23/2014 ) -Changes: Specular and diffuse calculation combined…