Okay, some more specific answers.
The main saucer is out of round, but only by a small fraction of an inch. and because it had to be built that way. It did not become warped over time. Such a small deviation would hardly show up onscreen.
Gary measured only one of the nacelles but I believe it was Shaw who mentioned one was a bit shorter than the other.
The upper gridlines were drawn on very neatly & regularly, but the circular ones were definitely not very concentric. The radial lines weren't perfectly spaced, either.
The engraved grids were awful - irregular in shape & size.
The main saucer is out of round, but only by a small fraction of an inch. and because it had to be built that way. It did not become warped over time. Such a small deviation would hardly show up onscreen.
Gary measured only one of the nacelles but I believe it was Shaw who mentioned one was a bit shorter than the other.
The upper gridlines were drawn on very neatly & regularly, but the circular ones were definitely not very concentric. The radial lines weren't perfectly spaced, either.
The engraved grids were awful - irregular in shape & size.