How to fix smoothing (rotated / reversed specular or normal map) problems?

Sometimes after importing from a different 3D software or from .alo format, working on the model and (re)exporting it to .alo format, and looking at the it in the Alo Viewer or in game, one or more polygons will seemingly have wrong speculars / normal map.

This happens due to 3DS Max mixing up the smoothing of a single or more polygons in certain meshes.

To fix these polygons, you first have to: Alternatively to fix more than one faulty polygons instantly:
 * 1) find the faulty mesh in the Alo Viewer by turning meshes on/off
 * 2) in 3DS Max select the mesh with the wrong polygon
 * 3) modify -> Polygon mode -> find the Smothing Groups: tab -> deselect the existing and select a new number
 * 1) select the faulty polygon(s) -> Detach -> Detach as:
 * 2) select the detached object -> modify -> add Smooth modifier -> choose a Smoothing Group