Nowm i have some problems with the paint part. My loco body's paint looks a little different from the way it is supposed to be. when viewing the train from a certain distance the paint/color edges are not sharp, its looks like a spray paint. It also looks as if the body is a little bit illuminated than the surrounding objects. As i don't know how to use photoshop so, I used ms paint for paint work and converted to .ace format using photoshop.Below is a video link of my model in TS2014.
https://www.youtube.com/watch?v=oVEkT6pXS-4
Could using MS paint be the reason to why i get such texture in the game.
Actual model in 3Ds max -


and next time will try not to stretch the texture image. And LordMannu also suggested some tips to apply in 3ds max. Changing some default values and adding a suffix_nm in the ace file. Will try all of it and will see if it gets corrected