I just switched the audio connection between my DVR and my receiver from analog RCA to TOSLINK. Now the volume is acting all kinds of crazy. I will be watching tv and the show I am watching will be super quiet, then a tv ad will be super loud, then the next ad back to super quiet. Anyone know what's up? And how to fix it? I have a Motorola DCT6208 for DVR, and a Pioneer VSX-815-K receiver.