I need to force my 612 to record on Tuner 1 only since i have a Winegard Dome on my RV and only the Sat 1 connection can change the dish to another satellite. Sat 2 input can receive only and is limited to the bird that the Sat 1 input has picked. Everything seems to automatically try to record from Sat 2 input. I read some of the related threads as to "Record Plus" etc, but can't find any of the tips mentioned for the 622 or 722 that relate to the 612.