On the last windshield two service techs held the glass up to the sun. It was an awkward experience as the windshield was dirty and they gave me a rag to wipe off the dirt while being held. But, there was grease on the rag and it smeared it. I got some clean rags and cleaner and cleaned it off, best I could. When i looked through again I could see some speckles, but I was worn down by it all, and it appeared there was less, so I gave the go ahead to install. Well, there probably is less, but this is not clear glass. I had one glass shop look at it and the owner said he has never seen anything like it in 30 years in the industry.