I had low numbers on the 129 sat when I first installed it and then I changed my elevation and used a sat meter to peak it on 119. Once I changed my elevation by one point it came in stronger on all 3. It seems the elevation for my area is off by one point. The instructions say not to change the elevation but I never listen to instructions. I didn't change the skew and left it the same as instructions. It came in good in the high 90s and 80s & some 70s on most of the transponders on 129. If I ever want it to default to 61.5 sat which I have plugged in also, I will just run a check switch with the 129 lnb covered in foil. Then it will only recognize the 3 sats instead of 4. Either way I am set for what ever I need now.