I've been meaning to try to offer something useful to this thread this week, but my schedule has conspired against me...

UMtiger is using the digital output from his Pioneer, and as such would be getting an undecoded bitstream for Dolby Digital and DTS. That arrangement would bypass any delay settings in the player. Setting them all to zero can't hurt, but if the player is operating as it's supposed to it shouldn't be applying those delays anyway.