Hey Salgaigh. I had the same issue for awhile. I tried everything. Headlight restoring products, extreme bugging, headlight restoring pro , you name it. In the end, I fixed mine when I had them customized. The issue was a buildup of oil residue inside the lens. When they cut the lens apart to customize them, I made sure to ask them to clean and buff the inner lens. No amount of polishing or sanding will work, if the issue is inside the lens.