Bizman, I think you're missing a key point. Sounds are working fine. Radio is working fine. People talking back and forth, hearing them. Then at more or less random times, I'll see someone who was literally saying something ten seconds before attempt to say something, some people on channel will hear them, some won't.
It's really odd. I will look into sequential play, I can't remember if I had that on or off.
Wiley.