I just figured out my slimline had been damaged. I could never get the HDs as high as the one on my house. When I switched to SWM3 a few weeks ago I decided to re-zero out the level, set the skew and tilt the same as the DTV guy did and I still could not get 90s on 99 & 103. I got to looking at my dish and the bracket that the dish bolts on to had been bent at some point in time. One of the tabs was deflected up a skosh.
I took it apart and restraightened it and it helped. I think it is still not right so I am going to watch for a new dish.