I am in AZ. I have SL5 4-wire going into SWM8. Line-of-sight no obstructions. Suddenly noticed CNNHD pixelizing and freezing. Other 99(s,ca,cb), 101,103(s,ca,cb),119 fine strong signal in the 80's,90's & 100's. Run the setup and it shows 99,101 & 119 have odd and even checkmarks but 103 has red...