I do not claim that you are to blame, I write how you can do better. There is no need to check each model, in this mod there are a lot of models made in such an inexplicable way. This cannot be called a mistake, but it will lead to inconvenience for those who want to edit these models.
Symmetric UV specular and double-sided textures are two different things. double-sided textures are best used to a limited extent where they are really needed. This is for example the glass sights of world models. double-sided textures when converting their ogf into an object can cause the normal direction of random polygons to change.
sinaps_nn
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