Are you getting all satellites beyond this sat in the arc all the way to the far east and west?
If problems with all sats beyond this in the arc, probably need to adjust arc on dish.
FYI here is arc adjustment info...
At the bottom of the following web page is a diagram of the arc and how you can be off slightly with dish adjustments.
Footprints by Dish Size - Adjusting the Polar Mount for Prime Focus Antenna - C/Ku-Band Satellite Systems - Tuning, Tracking, Azimuth, Elevation, Declination Angles, F/D Ratio, Focal Distance, Inclinometer, LNB/Feedhorn Assembly, Actuator Assembly, C
To adjust the arc, while pointing at a south satellite and using a coax signal meter, move the motor slightly up and dish slightly down. Or move the motor down and dish up.
When you are done with your arc adjustment (still on south satellite), adjust the signal meter so it is middle range (5 on my meter), then press lightly on the dish with your hand to move it up - signal meter should go down. Press lightly on the dish with your hand to move it down - signal meter should go down.
If the signal goes down if the dish is moved up or down, then this means you are
aiming at the satellite dead center and have a perfect adjustment for that south pointing satellite.
Now the trick is to keep adjusting the arc - moving dish back and forth, untill all satellites in the arc are dead on like this.
This took me a week to get right the first time I tried. Takes lots of patience.
Hints...
If the dish needs to go up more for east satellites and down more for west satellites (or other way around), then need to rotate positioner on pole.
If both east and west need to go down more or both need to go up more, then it is an arc adjustment.
If you need to adjust the arc up in the east and west, then you adjust the positioner DOWN and the dish up.
If you need to adjust the arc down in the east and west, then you adjust the positioner UP and the dish down.