PRECISELY what does the little Hopper Plus module do? I've had the Hopper Plus nearly a year and starting a week or so ago we experienced glitches-freeze up and stop go during live programs and recorded shows. After seeing a remedy in this forum, I unplugged the Plus box/module and it cleared up the glitches BUT now we have poor picture quality with dark contrast and I cannot find picture settings in the Dish menu. When Hopper receiver is turned off, my picture quality is perfect. Please advise