S map is a spec (specular) map And if you used a different texture base IE the British Light infantry jacket for a more uniformed look then you would have to change the spec and bumps in the proper files. All the ranker jackets use the 3 diff. drummer jackets' n-map and s-map. you will find them to edit in your mmmaterials and mmtextures. and always make a copy of files before messing with them. Also good job, keep up the good work.