folks, i just had my windscreen replaced. i chose MSG (as it is just ~rm500 vs ~1600 for sicursiv or sekurit).just some questions from doing the repair:1. the old windscreen used to be held by little white clips all around it - but the workshop man says it is difficult to get replacement clips. so the new windscreen is held by some kind of black tarry looking glue all round?2. why is MSG so much cheaper - is there something special about the oem bmw glass material?