And all is right with the world again.
I took the pre-amp out of the path and looky looky...
Thank you ADT for your help.
Last question: I don't think I really have a need for a pre-amp. I only need to combine my CS600 and DB8E. I assume this product will suit my needs:
http://www.solidsignal.com/pview.asp?p=ZUVSJ
John