I have just 2 channels that started getting an intermittent 771 error. HDTH and ESPN2HD (channel 281 and 209). I suspect a dish realignment may help but I would like to verify a weak signal on the associated satellite and transponder. I found a post from 5/1/10 by gct but I did not see his attachment that lists the transponder mapping. This is my first post so I may be missing something. Thanks for any input.