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I recently purchased the above system from lidi stores and have it tuned into Hotbird 13.E and Astra 19.2.E. I get a really good picture on both but one thing puzzles me,when i change up and down channels with remote control the signal strength display is usually 93% but the picture quality is often between 50 and 60%.Why when the picture is so good do i get such a low picture quality reading?