I own a 2014 Mobile Suite 5th wheel & my Winegard satellite dish died. I found out that is discontinued & I had to purchase a SWM3. I had a local dealer install the dish on the roof & it did it's thing. Great! All satellites were locked in. Then I tried to hook up the receivers. I have tried every possibility in the manual but I still come up with no signal on Tuner 2. I need help, please. I'm so frustrated...