First of all, you need to accurately measure what the declination is now.
Take a measurement on the main axis bar with a digital angle finder or a protractor with a string and a weight.
Then take a measurement on the back of the dish with a flat piece of steel across the big circle in the center of the dish and subtract one from the other.
That will tell you how much declination you have now. Verify it with
this site, using your latitude and longitude and the satellite you want to hit.
Only then do you need to move it using the top bolts in picture 3 of your pictures above.
My guess would be that your whole assembly needs to be twisted one way or another.
The Pinnacle is a great dish and the H-H mount is fantastic, but a pain to tune in especially with a co-rotor feed-horn. An adjustable Seavey feed-horn is need for that deep a dish, but way too expensive for me.
Fred