Well from what I hear Caig Pro Gold isn't junk
it is supposed to greatly enhance any electrical connection. I think it has the ability to greatly magnify line noise thus the line noise that was in the system already is know 10x. This is just my hypothesis though.
I still have to swap out the receiver, I am very curious because I have heard about line noise and ground looping issues with the new NAD receivers. I need to locate a receiver though.