Was wondering if some kind soul on the forum could help me out, I have just changed my single din Concert radio/cd to a RNS-E unit. All was well until I realised that because the climate contol unit sits lower in a double din housing it no longer fits - basically it's to big. I have since seen a couple of threads that suggest I need to take a file (or similar) to the edges and trim it down, has anybody done this and if so how much trimming am I looking at ? - at a guess I'd say 4/5 mm either side but it would be nice to hear from somebody who has attempted it. All advice welcome.