Hello I am having issues with my DirectV HD service. I am getting a lot of artifacts, and distortion when watching HD Programming on my local channels. Sometimes it will just go to a blue screen and it may take about 30 seconds for the screen to come backup. One day it lost the signall and the receiver reset it's self. I don't know if it has to do with the Alignment of the dish. I called Directv and they had me check the signal strength. It's at about 75% They had me check different satellites and transponders but this is the best signal I can get right now. They told me that It could be 2 things, 1st that the reciever I have (MDL: H20, MFR:600) was known to have problems. Or it could be that it's not align properly anymore. In any case they wanted to charge me to fix it. Does anyone know what can be the problem and how to solve it? Thank you much.