Presently have a H-20 receiver and a 3-LNB (18x20) dish Switch type 02 Multi switch. The LNB is BSNA4-2028. All works fine. Now I want to get the HD channels so I got a Slimline Dish with a SWM SL3S4NR2-01 LNB I got the correct dish settings for my zip code 39 elevation and 67 tilt. I can't get any signal. Went through setup and am not having any luck. Can't get any signal at all. I have the dishes on poles right beside each other. I have tried moving the azimuth very slowly back and forth but still can't get anything. Any ideas?