Just had my receiver a week or so and the HD channels look great but the other channels are really horrible. I know I must have something set wrong so I was messing around with the settings. When I put the Native on and try to change the channels I am not getting a signal on channels that are not HD. I put the resolution button on my receiver to 720 and then try to change channels but that doesn't seem to work, confused here what do I need to change ??