A couple of weeks ago, i buffed/polished my windshield. I used an orbital buffer and Griot's glass polish. Then followed that with Griot's glass clay bar. Then used Stoner's invisible glass. It looked clean but when it rains, after the wipers wipe the water away, the water leaves these odd spots which resemble the windshield fogging up but only in spots (and its not really fogging up at all). Its like the water is smeared and then dissipates slowly. Its really strange. Are there any suggestions to remedy this issue?