Use the declination angle to help you get the dish angle set correctly. You do that by subtracting it from the angle of your motor mast. On a SG2100 for instance it is usually 30° so you would set your dish 30° - 3.95°=26.05 or just 26° on the DISH elevation scale. If you motor has a 40° bend in the mast (shaft) the the setting would be 36°. You will need to look in the manual that came with your motor to find out how much bend is in the mast.
This will get you in the ball park to find your satellite. I am attaching an install manual that SatelliteAV used to publish when they sold motors. I believe it is one of the better ones.
Bob