Make sure that when you set the levels on the center and surrounds that you don't change them with the volume up and down buttons rather than the lft and right srrow buttons. I did this the first time I set the levels and had the same problem you're having.
Good Luck
_________________________
Kef Reference 203 R/L, Reference 202c center, Kef Q15 surrounds,Kef Q100 rear surrounds, Velodyne VLF-1012 sub, Krell Showcase pre/pro, Krell 2250 Amplifier, Lexicon CX-5 amplifier, Sanyo Z5 projector, Oppo BD-83SE Blu-Ray player, Luxman PD121 turntable, PS Audio GCPH phono preamp