Today, all my 110 Even transponder satellite channels lost signal on all 4 of my receivers. (3 301's and 1 501PVR) All other channels still work, but this is rather frustrating because it effects the local ABC, CBS, NBC, and FOX channels. Nothing has changed on any of my receivers or the dish, so its rather strange. After an hour on the phone with tech support they finally gave up and said they'd sent out someone on Friday. If it is just an allignment issue then they still better not charge me. Anyone have any other ideas of whats wrong?