After four and a half hours (or so) of work, all of the alloy nipples in my geared bike’s rear wheel have been replaced. While the wheel is pretty true (maybe 0.5mm out at the largest spot) the dishing is still about 5mm off, so I’ll have to do more playing another day.
Also, that image above shows one of the feeler gauges recommended in the Wheelpro Book. It seems to work pretty well, although I do need to get better at using it. I imagine that will take quite some time.
(I also must fix the damned Park SW-40 spoke wrench. Its got a nice head on it, but the curved handle part bends too far over the head, so when the spoke comes off of the nipple at a slight angle the tool gets stuck in place.)