Mikeny, I just wanted to give you an FYI. We've had the same problem with losing some channels. A tech came today and he found the dish out of line. He adjusted it and we are getting great signal strength and all the channels are working like a charm. We also found out that the occasional loss of sound was because of the mis-alignment.
Well, OP has very specific problem and you can see it on his screenshot. Your case "with losing some channels" doesn't supported by same signals. Sorry.