lexus20 I apologize for this being left unanswered, if my reply which is effectively bumping the thread does not get a reply, I will look at later when I get home, its AM here I got things I have to do for the day.
Its extremely hard to make something white because of the shadows baked onto the texture as you have found out.You are better off using something that is white to begin with. If you be a bit more descriptive in what you are trying to do someone may have a solution.
Unless you are uploading it to TSR or similar where you have to abide by their doctrine rules I wouldn't even worry about the medium LOD. The high one is only 730, I'd use that one for the medium as well and just make .9 for the low one. 730 is a really low poly count which is really good low poly meshing. Half the reason it wont decimate is because of the low poly count to begin with.
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