There is something really bugging me that I need to ask your opinion about. I have recently taken my camera to one of the authorized center (Nikon Fixation - UK) to clean some oil spots in the sensor. It was all good and the pictures are all clean. But there is this dust somewhere that I can't get rid off. I though in the beginning it was oil in the sensor, but it is clearly not the case (after cleaning the sensor the spot is still there). It is there and I have blown it and managed to move it around just a bit. So, I am trying to figure it out where the dust is... could it be in the mirror? how would you clean it? Could it be in any other compartment? I have clean the eyepiece so it is not there... How you guys deal with this? just leave it there and it will settle one day? take to nikon service?