If I am searching for a signal on a transponder, but do not yet have any channels for that transponder scanned in, is there a way to select that transponder (with no channels scanned in yet) to align the dish with the full screen signal meter? (I do have other channels on other transponders on that satellite scanned in, just not any channels on the transponder I am trying to get) Do I need to first align the dish on another transponder on that sat first, then scan a channel in on that transponder I am trying to pull in then tweek the dish on a channel on that transponder?