I recently upgraded my system that had a WB68 and WB616 to use two SWM-16s, and had the dish aligned as well. The run from the dish is only about 30' and is RG6 solid copper. Signal strength is excellent, 90s across the board on 99c, 103ca and 103cb, as is SWM signal strength. There are no trees or any other obstruction, and today was a clear day without much wind. Most channels are fine, but certain channels, like NFLHD for example, will occasionally break up and pixellate. I saw it on some other channels like BTNHD so it isn't just that one channel either. This happens on multiple receivers, but other channels like ESPNHD and ESPN2HD are fine. I have never had problems with those, before or since I had the dish aligned and upgraded the switches. I used to see this happen regularly before on those same channels, but my signal strength was lower due to my dish being a bit out of alignment so I assumed getting that fixed would be the end of these problems but I guess I was wrong! I looked online and found that NFLHD is on D12 103W (103ca) transponder 18. I checked that one directly and see it varying between 93 and 94 when I watched it for several minutes (but unfortunately didn't catch it when the channel was pixellating) I also found a sun outage calculator, and put in D12/103W for the satellite, and clicked on my location (leaving everything else at default) and the last day of sun outages for me should have been a week ago. Since everything else has been fixed/replaced in my system aside from the LNB, I'm wondering if it may be the issue? Could it cause this type of problem? Is there any way to tell if it is bad, or should I just have it replaced and hope it helps?