It appears that I need sat D10@103W/ TPN 15 fpr my locals. I still need D11@99W/TPN 4, 2, etc. for ESPN and others/ Any tricks to fine tuning the 103 and 99 sats? What is an acceptable signal strength to have on each? I have open sky, sat sits at 20' above sea level, have set for coordinates for 21842 zip.