Yes, Pysprof1, Ratatouille is great!!
UPDATE:
I am back in business!!
Ed in customer service and engineer Jim were very responsive to my problem. We're still not sure what was wrong with the center channel, but Jim resoldered a bunch of the connections.
When I got the unit back, I hooked up just the center channel and the test tone could be heard through the center speaker. Then I added the cable box as a source. I let it run with only the center channel for a day. The sound stayed full without any drop offs. I then added some additional channels one at a time. The center stayed full without any drop offs.
I now have all the sources hooked up and all the channels running.
It sounds like a millions bucks. I popped open some wine last night and enjoyed the Chris Botti Live DVD. The jazz on that movie is excellent on the 990.
Thanks, Ed and Jim, for your patience in dealing with me and for your attention to my needs!!
Best to all.