I got back at fixing again. Here's a picture of the brakes back on and the axle in, with the horseshoe clip slipped in.
Anyhow, I finished up the differential pinion gears, shaft and lock, tin rear-end plate, and brake drum, spacer and wheel.
On the test drive I found that I had fixed my vibration somewhat, which leaves me somewhat satisfied. There is a very fine little vibration in the gearshift and emergency brake handle, yet.