Sorry - should have specified the dish.
1) it's the AT9
2) cable run is about 80 feet, checked all connections.
3) Taken with cloud cover and showers:
99(a) transponders 1-16; 42, 57, 40, 56, 57, 45, 57, 47, 60, 48, 57, 51, 52, 60
99(b) Transponders 1-24; 0, 71, 0, 88, 40, 86 , n/a, n/a, n/a, n/a, n/a, n/a, n/a, n/a, 75, 80, 66, 86, 0, 85, 34, 70, 85
103(a) transponders 1-24; 0, 0, 0, 0, 87, 0, n/a, n/a, n/a, n/a, n/a, n/a, n/a, n/a, 74, 0, 0, 83, 0, 0, 0, 0, 69, 72
10(b) transponder 1-16; 69, 50, 60, 47, 68, 53, 61, 52, 68, 58, 66, 58, 70, 63
4) HDTV Native = ON
5) no switches, jut the 4 lines from the dish- one line run directly to the H20. (also have 2 non-HD boxes with their own lines out of the dish as well, and one open line)
I will add that this had not been an issue until late August/early Sept. Then it seemed to get worse primarially on NESN and Speed. I'm not knowledgable enough of this stuff to tell really what's happening, just that it takes a while for the box to connect on the channel - once it connects it's a great picture - but if i change channel and return to NESN, same thing.. wait to connect.