Is anyone aware of a product that can/will effectively fill (ie. same refractive index) in micropits on a windshield? Been polished a number of times w/ Ceraglass and the windshield is about 10y maybe. Would prefer not to replace it but it's got lots of tiny grain-of-sand size pitting going on. Actually, the polishing made it more noticeable since it got all the other crud off the windshield.