I just hooked up my new equipment this weekend with HD. The analog channels for Time Warner get a manual 5 channel force to get sound from all my speakers. Digital channels sound good automatically. While watching the news on the HD channel, I only get sound out of my center speaker. When a commercial comes on, I get sound from all speakers. I can't even do a 5 channel "force" while the news is on in HD. What's up? Is that a receiver tweak or is that normal from news broadcasts?