I think I achieved an acceptable result by manipulating the yoke and then re-adjusting the pots.
I really wanted to move the image down some more and then scale it up with the v-size and h-size pots, but apparently moving the yoke further away from the screen appears to work the opposite of what I expected (yoke further away pushes image up higher.) And I can't physically get the yoke any closer to the screen than this.
I think I am good for now.
Still open to any tips to improve it.
