Tom, thank you again for reminding me about those magnets. You once told me about that many months ago, and at that time I tried adjusting them with the SE/30 turned off. Just doesn't work that way, so I called it quits at that time. But tonight I was determined to get it right. I slipped on a rubber glove (which my wife uses to wash dishes). I then kept the machine turned on without worry of shocking myself even when my fingers slipped all over that yoke and flyback!
Here is a
Flickr photo I just posted. I added some comments under the photo, so be sure to read those.
Simply put, adjusting the top, center magnet shifts the left-top side up, which solved my problem. But I found that many of the menus toward the right side of the screen were leaning a millimeter or so to the left (rather than straight up and down, they were ever so slightly diagonally shifted). I then proceeded to mess around with other magnets, but I couldn't get it quite right. Correcting the top-left side of the screen (the problem area for me, which is shifted down) would cause my menus to shift. So I ended up restoring the top-left part of the screen to the way it originally was. It's not so bad anyway so I can live with it. But it was a bit frustrating that I couldn't fix the problem after much playing with those magnets.
The other interesting part is that I do not recall see that shift when I had my old analog board in the machine. I don't think that says anything bad about my existing analog board though, as it is well know that swapping analog boards in classic Macs often requires adjustments to the screen. Even so, I couldn't get the adjustments to work in my favor this time. The top left part of the screen still is a tad lower than the top right.
Thanks again for your advice.