Since you appear to be doing everything completely right, I think we need to take a listen. Post a WAV segment of the work here on the forum.viewtopic.php?f=49&t=64936
I don't know if it says this in the instructions, but reduce the show to mono with Tracks > Stereo Track to Mono before you prepare the work for us. You will be able to get twice as much music on the forum that way. If the capture is already in mono, ignore this.
Pick a segment with no playing at all and then music so we can get the contrast as well as the music and damage.