I'm assuming you have probably did this, but I have to ask anyways. Have you tried changing the addresses to something different other than the 3 and 1 you are using? I have the exact same receivers with no problems, I'm using 2 and 1.
I would call Dish back again and talk to another CSR, or got to the Forum I posted in the topic above and ask that question over there.
[Link: pub88.ezboard.com]