Thanks for the input. The picture quality seems pretty good, and the audio is clear. Sometimes the audio is kind of weak depending on the source, so that's why I was curious. I can get the sound to come in stronger, but then I get distortion of the picture (the picture will twitch along with spikes in the volume).
The top of the picture looks a little wavy, although most of that can be straightened out with the Horizontal Hold. There is also a bit of shadowing on the right-hand edge of the picture tube, due to the ion trap. When I completely eliminate the shadow, the picture dims quite a bit. At maximum brightness, a sliver of the right side of the raster disappears. What you see is (so far) the best compromise I can get.
Here's a few screen shots using the Techpreservation test pattern DVD. They look better in person. Here's the "Indian Head"
And the TV Analyst:
Some linearity patterns. The circle looks a tiny bit egg-shaped on the right, but for the most part looks pretty good:
And lastly a still B&W image:
