Dear flaps forty,
Sorry to surprise you but I think you are probably always sitting at door 1 R ???? When was the last time you sat at the back of a 747 at door 5 R or L ????? As a regular guest of these 2 seats I see it every time, every time!!! I guess from that far forward you would need binoculars to see whats up back there!!!
Cheers anyway
Pete