Ok Peeps - first post here. We'll see where it gets me. I have a 1996 328iC (convertible) with close to 100k miles on it. When i am driving withthe top down and i hit any sort of a bump the two left windows (from and rear) make a squeeking noise like the two are loose and rubbong together and the rubber bits are squeaking. Does anyone have any idea on how to fix this? Tighten soemthing up in the window bay?