All I can add is tracking the arc is a combination of 3 settings. There is no one special setting that will make or break you. I personally do not like using Echo birds for alignment as their signal is so strong you think you have a good alignment on them when really you may not. In your case it is your south sat so work with it.
Once you have a lock on your south sat start from there and move out to the east to the farthest sat you can lock onto. Now gently push up on the dish. Does the signal go up or down? Write that down. Now do the same for the west. If you get opposite results your dish is not perfectly aligned on center.
This is critical to tracking a large portion of the arc. If you received opposite results move the dish a little bit in the direction of the up movement produced a higher signal. This is a movement accomplished by rotating the entire assembly on the mast. Continue this process until you are getting a lower reading when pushing up and pulling down on both ends of your arc. You are now perfectly centered.
With this accomplished we simply need to work with motor and dish elevation. If you are not getting the full arc at this time try raising the dish a degree and retrying. Work only with dish elevation at this time. Work with it until you have as large an arc as you can get. If you do not have the full arc yet work with both dish and motor. For every degree you raise the dish lower the motor. You may be lowering the dish and raising the motor. All depends on your results.
It will be fun to watch this process. When you get to the end of it you will be very glad you did not call in someone else to do it. Before long you will be posting advice to others
