OK, if you are on 125, I would take a large piece of cardboard that you can mark as a protractor and fasten to your pole.Mark it at 125 degrees, mark your true south position, 117, and the positions of the the other satellites you want to get. You can get these headings from dishpointer or other URLs o the net. I do not see a picture of the setup, so I am <<<<< Assuming >>>>> you have an actuator on the set up. Move the dish to the highest point of the arc, you should have a bar on the mount the will be level at that point. Check that the dish is aimed at 117, true south. If so then move the dish to where you want to find the satellite and see if it is there. On my setup, I had to draw the protractor in reverse as I could only "point" at the protractor by a bar mounted on the backside.
OK you Gurus may not like my idea or may improve on it, but not having a box available at that time to move the dish, it did work. Also remember that you will be changing the skew as you go from 125 to 99 or what ever. and if not handled by the mount ....... ouch! and the polarity may not change. Actually, I am trying to answer you question by what I had in my front yard. Need some pictures to give better advice.
Oh, BTW, if I remember that road, it is not the friendliest to an RV and continuing East means a big backtrack to 84. It would not be too bad for a weekend get-a-way though. (close to 60 gallons of fuel, though).