Situation: Only available HDTV is via HBO 509; receive Directv from dual LNB oval dish on roof for new Toshiba 40H80 HDTV with Toshiba DST 3000 receiver. Receive OTA via rooftop antenna. Current update: Installer put oval dish on same mount that round dish had sucessfully performed for over one year. We get a strong 92-94 signal on the satellite at 101 degrees. All channels are fine. The receiver is only working on round dish mode, though. When we got to the installer program ande input "oval dish 2" the Toshiba can't auto configure it and defaults back to round dish. Installer thinks that multiplexer in house is precluding getting satellite B, i.e. the one at 119 degrees. Does this make sense? I'd have thought that the disk needs better aiming. If we're getting a strong enough signal with the existing wires to register 92-94 signal stength, it'd seem that the wiring is not a problem. Any suggestions? Incidentally, we pulled TIVO out of the equation. Once we get the HDTV resolved, won't Tivo still work for all the other satellite channels and OTA? Thanks.