Thanks Steve, interesting read. Two things spring to mind. Firstly I was told that my new screen is made by pilkington, who apparently make original screens for many manfactures. I don't think any major car company actually make their own screens. My previous car, an IS 220d, had a pilkington screen on it so must have been replaced at some point. The seal at the top was not fitted correctly and gave me a bit of wind noise. Don't think that will be a problem in the GS as there's no rubber seal on top. Finally Steve I approve your musical taste!