While regarding this picture:
Photo © Jan Kertzscher
I noticed that the inner right-wing flap track fairing is shorter than the one in the left wing. You can even see a grey-painted area, more or less what the left-wing fairing covers. In other pictures it is also seen:
Photo © Kok Chwee SIM
Photo © JKSC
Photo © John Farrington - FlightLineImages
Photo © Daniel Alaerts - AirTeamImages
Do you know why are the fairings asymmetric? I would expect both wings to be symmetrical? I haven't noticed that in other planes.