Just curious as to this. Some transponders (Sat 101) show equal levels between tuner 1 and tuner 2. On some 2 is higher than 1, others 1 higher than 2. Usually the differences are no more than 3%, but there are some transponders where the difference is 5 or more %. It's not always one tuner higher than the other, as I stated some the first tuner exceeds the second, others it's the other way around. Is it due to frequency responses of the transponder signal, or something else? I'm not really having any significant troubles. I recently replaced connectors at the outside of the building due to moisture corrosion. This cured an intermittent loss of signal. I also checked connectors at the LNB, and found them to be just fine. For the most part my signal levels range from the high 80s to high 90s, so I'm fine with that.