I have a nice clear LOS to just about the entire southern horizon. Mounted the dish about 6' off the ground, no houses insight just a corn field. I have a 77% level, but only getting between 10 and 20% quality on IA8, 30% on G10. I tried several adjustments, both elevation, and azimuth, but cannot get any higher. Is it the dish, the LNB, or what? The NF on the LNB is 0.6.