Hi guys, its been a while since I've posted on here which means my A4 Cab is running well (hurray!!). Just one minor niggle at the moment... So my A4 developed a few strange cabin noises over the past month or so, squeaks, rattles etc. I isolated the majority of the noise as coming from the sound of the leather sun visors rubbing against the plastic roof section, infuriating, but easily solved with a couple of felt pads meant for furniture feet. Then there was a squeaking coming from the windows, this was fixed with a good clean of the seals around the window, specifically the strip up the rear mini-window. Now I am left with an infuriating, constant "buzzing" that seems to come from the centre of the dash at window height, roughly where the demister vent is. When I say buzzing, its like the noise of something small rattling very quickly, so I was thinking something in the air vent maybe? I'd appreciate any help locating this, though I realise the the parabolic shape of the windscreen could make almost any sound appear to come from the center of the dash! Cheers all. Seb.