Help w/ McCormack RLD-1 integrated into my HT

Has anyone had experience integrating the McCormack RLD-1 into an HT setup? I have a 5.1 system w/ a processor and I am trying to use the RLD-1 as the preamp for my 2-ch listening. But I cannot get this to work properly.

Any help would be greatly appreciated.

Your RLD-1 has HT pass through. I pulled this off the web site "the RLD-1 features a Theater mode, which sets the RLD-1 to unity gain and locks out the volume and balance controls, passing control to your surround sound processor". You might want to read through the owners manuel if you have it. If you've done that already then tell us what problems are you having?