This is all four with the small ends facing you.
I've looked at a few pictures of the real vernier shrouds. It's hard to see the actual shape. This is the shape shown on the Estes instructions.
A small hole is made for the small vernier nozzle.
I drilled a small hole to start, being careful to center the drill.
To taper the hole in a conical bore, a sharpened dowel was spun in the drilled pilot hole.
Tapering the pilot hole will give a better fit of the small vernier nozzle.
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