I have a 750iL that is double paneled. I took it in for tinting and the guy said that I shouldn't have it done because the air in between the panels heats up and can crack the windows. I dont believe it because as far as I know the space between the panels is air tight so expansion because of heating shouldnt be a problem. Isnt that right?? I really do want to get it tinted and I am sure I have seen other 750iLs with tints. Thanks for any insights into this matter.