I am new owner of a Xelos A32, which gives great pictures in all but one area... It's black, or should I say grey, levels. No matter what settings I use, when watching a dark screen, the black levels appear grey, as though the backlight is turned up high. Is this normal for a Loewe LCD, or should I be asking for a replacement? There doesn't appear a setting for turning down the backlight... Any advice would be most appreciated.