I bought a Toshiba 40H80 about a month ago along with the Toshiba DST 3000 and the oval dish for DirecTV. My installer has been to our house 4 times and we still can't get HDTV, though. He has separately brought back and tested the dish, the TV, the receiver. All work flawlessly at his shop. At my house we get strong signals for satellites A and B; ie. above 90 signal strength. We get all channels very well but get nothing for 199 and 509. The wiring from satellite to TV is new. Any suggestions out there?