I'm going to go out on a limb here, as you didn't list your EQUIPMENT that you are having trouble with, or a complete description of your DirecTV setup.cyclejim said:
But literally tons of people have posted here complaining about problems with the 99c reception, and it has (of course) nothing whatsoever to do with the actual transmission, but of course bad equipment that operates perfectly fine on all the Ku/DBS sats AND 103c (and probably 103s and 99s as well).
That limb? I'll bet you have multiple receivers, and utilize a WB68 in your system. It's either that or your LNB is out of wack (either alignment, you don't list your signal strengths but I'll 'assume' that your reporting is correct).
There have been at least 3-4 other folks here who broke down and replaced their WB68's. If you can, indulge me and confirm your system layout; didn't the CSR have you test the other leads off your dish?