if you go into paint.net and take a sample of the area with the glare on them, you should notice that the color that you just sampled is a completely transparent white. you don't want it to be completely transparent white, you want it to be completely transparent black, because the black will not give off any glare in-game.
so you would make a new color, set it to the color black, and set its transparency to nothing. then you would fillcan the effected areas and it should be fixed.