Jon,
The one thing that I liked when changing the needles was the slotted adjustments with the use of a "c" clip. He said the needles come 96, 97 and 98 sizes. Then you have 5 or 6 adjustments on the top for the needles to seat using the "c" clip in the carb body. Also when he changed the mains after the first run the carbs are held to the manifold by 6 worm drive style clamps. After removing the fuel rail ends, the fuel rail and all 6 carbs come off as one unit.
That’s Eiji on the right and me on the left: