[fact-like assertions]
Looking at my trusty -33s, I note (for the first time) that the keys are all offset slightly to the left -- the gaps on the right sides are consistently wider than those on the left.
In fact, the keys are molded as a single unit with the plastic front -- they're attached at the top side of each key to the plastic beneath the aluminum faceplate by two thin bridges (which act as hinges as well as points of attachment).
[outright speculation]
The alignment you're complaining about is the alignment of the holes cut in the aluminum faceplate with the keys, or the alignment of the faceplate itself with the calculator front.
Either way, I'd be surprised if there was any "one" around who bears direct responsibility for not taking extra time to align the face and keys. I assume that they were put together by machines which were periodically adjusted to keep the flow of calculator fronts within some specified acceptable range of alignment.
If the keys move without rubbing any sides of the holes in which they're placed, I suspect your unit met production tolerances at the time it was built.
[hope]
But maybe there's someone out there who REALLY knows something about this topic . . .