FWIW, this is what I did (http://www.parts-express.com/pe/showdetl.cfm?partnumber=240-808):
Jerry, Thanks for the picture and reminder to get the center channel 'OUT'. The wife and I just watched a movie with the center out and up in front of the TV. She commented right away and I could hear the difference too. I guess I had stuck it back in it's hole because my mind didn't understand how it could make such a difference. Well my ears understand now. My mind.... well, of all the things I've lost, I miss my mind the most.