However, I found that if I peaked on Montana PBS (12104), which I do watch, the signal quality on the Horizontal feeds was seriously compromised. If I peaked on the Horizontal feeds, Montana PBS's quality went into the toilet. I believe it is interference from 12104 G-18 (123) which meant to peak for Montana PBS required the dish to be slightly off of 125. So to get all, I had to give up a little on Montana PBS (about 10-15%) to get enough quality on the Horizontal feeds to avoid them getting too close to the pixelation zone. Works just fine. (NOTE: interestingly, the mux at 12178 seemed to be "happy" at either peak location.)