I'm officially giving up on Easy Angle/Companion Angle for geese. I don't know what I'm doing wrong, but every one has the top pieces slanting down. At this point, I'm just glad Easy Angle worked well for me on clue #4.
After my geese trouble on clue #2, I wimped out and bought the Deb Tucker Wing Clipper ruler. This is a cut-down ruler for the 4-at-a-time method made slightly larger. So that's what I'll go forward with. I've made one set, and it is a rather fun method, and should prove faster for me than the basic method (I hope).