I have the "slim" normal 5 lnb dish. I have an HR-20 and an HR-21. Past few days I've lost most of the odd 101 transponders. When I say most, sometimes #1 shows a signal (in the 50 range) and the last group (say 21 on) have signal. It does this for both units/tuners. If I remove the b-band converter, I have great signal on all transponders on 101. I had a spare b-band converter that I swapped in but it does the same thing. Checked my wiring of course. Is this pointing to a faulty lnb?