I put up my sg2100 today. im at 95060 area code. I set elevation on motor and dish, set it to my true south, then with the receiver i moved dish to 116.8 and fine tuned it. I then tried moving to 93w and blind scanned. My results are channels from 87w, so i moved back to 103w and i get 101w channels. When i go to 116.8 channels come in right. Am i missing something or did i not set it up right? Thanks