I'm having a problem receiving the local CBS-HD affiliate OTA. I just ran a scan on my TV's tuner and it picked up 15 signals, including 10.1 and 10,2--the CBS station in question. But when I switch that same antenna to the 622, it finds those signals, but for 10.1 it says "not locked" and a signal strength of 0. (10.2 has a strong signal but nothing is being broadcast). Any ideas on why I can't get this station on the 622? Thanks!