Sounds like you are having more joy than me. Would you mind giving me contact details for your dealer? I am after some of the M performance bits but neither of the dealers in the UK I use can help due to a freeze by BMW I believe.
F10 M5 Competition White / Sakhir Orange
Loaded, Akra carbon titanium exhaust, Carbon trim, Carbon spoiler, RKP carbon front lip + diffusor.
F31 330d M Sport (Alpine White / Red)
Loaded, 405M 20", M perf: skirts, brakes red.