I'm having problems with transformer 3 and my Sony 2400. I've got it setup in 3.1. When I watch transformers 3 (default audio is 7.1 truehd) there's no sound from my centre speaker. However when I change it to 5.1 German I have sound through my centre. There's no option for 5.1 English and with out a centre channel the film is in watchable as I can't hear any talking. Any ideas? All other films I've watched all work fine.