Hi all.my lumbar support switch has broken and need to replace.does anyone have or know where I can get a diagram of the seat valance to see where the clips are to remove it.i have unscrewed the valance and undone three clips but still can't get it off.dont want to be heavy handed coz its fragile.last attempt at removing something I.E cd changer cost me £250 so any help would be great.regards in advance .tony