While searching for the cause of my car pulling to the right, I drove to a vehicle inspection station today, where the technician found play in both front wheel bearings, with significantly more play on the right side.
I purchased a set of Schaeffler *** front wheel bearings for both wheels, costing $62 per set - A 210 330 00 51.
I hope I can arrange for a mechanic to replace them in November.

Meanwhile, the diagnostician told me today that the control arm adjustment screws would be more useful if the car had been in a major accident.
For now, the bearings need to be replaced.