I don't know your dish, but generally speaking, you set the declination first, then forget about it. Generally, the polar mount will have an elevation, whatever it may be, and the dish itself is aimed five degrees or so lower than that. I think there are different settings for declination, all around the five degree mark. My latitude is near yours and my Birdview is set at five degrees. I hit everything from 55.5 w to 139 w.
You get your dish to zenith first, and set your declination. Then unless you are dead on your due south satellite longitude, you do a "click" or two in that direction. Then you leave all of that alone and the only things you adjust are moving the dish around the pole and elevation. I personally have never once used an inclinometer to aim a dish.
I like the method of setting with a "beep on scan" receiver and wireless radio headphones. The Manhattan receiver has an function that can be used.
Basically, you buy radio frequency wireless headphones - about fifteen bucks here, and you hook the transmitter of the headphones to the audio out on the receiver. You set the receiver to your due south satellite with all the correct settings for your lnb and C band. You set your receiver to a hot transponder.
Then you verify with your headphones that you are receiving the beep or tone.
Then you go to your dish on a calm and not windy day, and you move your dish around and up and down until your headphones respond.
I know some people have to do math, but I would rather work off of the actual position in the sky.
Good luck