Thanks Andy, for taking me in as an apprentice projector technician.
It is comforting to know that the grid will never be perfect. I think I have come pretty close, except now for a few red vertical lines on the left which I may leave alone, or experiment at leisure.
The picture is now pretty good and watchable.
There is a slight out of focus on the upper left which can be seen on ScreenShot17. I fear that this is a yoke adjustment that I am staying away from.
The black areas on bright adjacent scenes are bright themselves, not pitch black as I would expect. It is more of a "movie theater black". The black on dark scenes (on full black station breaks) are really black.
On a conventional set, I would think that a problem such as this could be addressed with the contrast/brightness controls, but on this one I think there is a bit more going on here.
As the Little Old Lady has not found her manual yet, I am stumped as to the function of the VIR. It's Hue and Color seem not to do anything. It doesn' t seem to be for preset color, as I would have guessed. There must be an easier way to adjust the color and hue than requiring the use of the Fantastic 4's Stretcheable Rubber Arms.
Didn't Sony at the time let the remote have a dual function of controlling color and hue.
If they did, the method of operation escapes me.