As I've just bought my new Copen I have been doing some maintenance to try and get it cleaner. One thing I have noticed is that only half the lights behind the central heating controls are working. Anyone know how these are replaced as I took the face plate off and unscrewed the screws holding it on but then it seemed too big to fit through the hole so not clue how to get the actual unit out to the change the lights, and also does anyone know what lights I would need? Thanks in advance!