Hello New here and could use some help. I'm trying to install a dish 1000.4 with sats 61.5, 72, and 77. I can get 61.5 but then can't get 77 or 72 , on the dish when i run switch check, the EL on the dish is set to 48, skew at 82 and my AZ is 171, I live in cary, NC and an advise would be kind ..... thanks.