I have been trying for a few days now to get a signal for a SD 121. I have set the skew and elevation to the settings on the dial and then used a compass for the azmuth. Does the azmuth setting include the magnetic error? I have even tried using a satellite signal finder and I optimze the signal and then go to the receiver and there is not a signal. I have tried pointing with another person and can find some satellites, but they are always the wrong ones.. Any suggestions?