Hello, I ask you in the nursing forum for a tip. In the A4 forum there was nothing to be found, there are only leaky discs but no stains on the aluminium frame of the windscreen. At the last basic cleaning I noticed stains and veils on the aluminum frame. But I’m not sure now whether the frame has a clear varnish about it or whether the aluminium is to be polished directly. Therefore my question to the professionals with what should I deal with without ruining everything immediately, or how to set e i am the easiest party if there is paint over it? Pictures I tried but that comes out quite stupid, with flash or light it reflects strongly and without you see almost no stains. M.H.