Help with Winegard Travler SK1000 and Hopper 3

I'm not familiar with Dish's technology but in the old days of single LNBs, the received signal was down converted to 950-1450 MHz. Since there is only one co-ax coming down from the antenna to the receiver, either the 3 LNBs have to be "stacked" or switched. I'm guessing switched since "stacked" would require a bandwidth of 450-1950 MHz. So switching is likely the issue and that could be a problem within the Hopper receiver.
Have you talked to Dish's technical department?