Same thing is happening to me too. For low SR signals, I need to deliberately tune in 5 MHz lower or the TBS 6922 SE tuner won't get a lock and scan the channels. My previous TBS 8920 is fine as is my Technomate 5200 so I can assure you, this is not an antenna or LNB issue. There's either a hardware...
There seems to be a bug with the latest Unicable capable TBSViewer in that it doesn't recognise the Ctrl+P keyboard combination which means, even if the combination is learnt using the TBS Remote, one cannot use the Pause button on the remote.