i got my directv system installed a week ago and i notice pixelation on my 42 inch sharp hdtv. I can't really notice it on my other tv's because they are waay too small. When directv installed the dish they used the existing cable connectors that dish network installed over 5 years ago. Do you think i need to switch out the cable connectors coming from the satellite to tv's? My satellite strength are all in the 90's btw.