I did not read the whole thread - it's late, but the 1000.4 was probably put on the WO because that is what dish is replacing the 1000.2 with EVERYWHERE, going to one dish with two different lnb heads one for EA one for WA. The computer system has probably been set to start spitting out the new dish config.
1000.4 is slightly bigger (better signal) than the 1000.2 because it was first designed for the weaker EA sats.
Now I go to bed.....