I've noted all the posts regarding this issue but my question is why/what actually causes it? Can't be the water pressure the installer uses? If spraying the windows with water then what about driving through a torrential thunderstorm downpour in a stock non-tinted RAM? Would the water get in through the window seals while driving? Why does water penetrate with tint installation but not say washing the car either at home or even a car wash or even the thunderstorm? Don't own a RAM but thinking of buying one. Thanks