I have a single LNB dish that worked great with my old Direct tv service. I have since updated to a SWM system and the dvr they gave me in exchange for the receiver I used in the motor home will not find a signal. I used the old receiver and locked on to the signal at 95%... then attached the new receiver (R22-100) and it did not recognize the satillite. Do I have to upgrade my Satellite Dish on the Motor Home?? in the receiver setup, I changed the dish type to 18" round single LNB and the switch types, but could not pull the signal.. anybody have any ideas???