I am using three receivers, two of which are DVR's, one of the DVR's is only receiving even numbered transponder readings (90 or above). I am getting 0 readings on all odd numbered transponders. I am getting the 771 code and have checked all my connections inside and out, I have reset the DVR, powered it completely down, and back up and reset again with no results. Still missing channels and the searching for signal message, I am using a 3 x 8 multi switch and dual LNB with a round dish. All of this started after a series of thunderstorms this past weekend. But the other two receivers work perfectly. Could this still be an alignment issue?