So here is an update on my audio woes.
I found that if I removed the HDMI cables from my HD-PVR, then the fiber audio would kick in to 5.1.
I was able to re-sync the audio with the HDMI cable plugged into the TV and then send the fiber out from the tv to the receiver. This solved the sync problem but I can’t get true 5.1. I can get PCM, but not true 3/2.
I have to return the HD-PVR because of issues with the unit
More details as they come.