it wasn't too bad.
I used analog
C band signals to locate known channels.
I first set the declination first on the top of the motor (for me 5 degrees).
Then pointed the motor to magnetically adjusted South.
Set the motor scale to the value from the documentation.
Then tried to locate Doc Scott's channel on AMC3 Ch20.
That is near the top of the arc for me.
Once found I tweaked side to side and elevation so slightly.
Went back & forth on that and the shopping channels on Galaxy15.
That put me on the arc.