Ok, I took the back off last night. There were three controls to adjust.
One was focus I think. I turned it completely clockwise and text became much clearer. Turning it counter clockwise resulted in a much blurrier picture.
Another control was labeled "Screen". I think this is equivalent to gamma. Turning it up brighted my screen considerably and also helped make the text look better when I combined it with turning down the contrast and turning up this control.
The final control I am not certain what it did. White and blue text seemed to have a glow coming off the bottom of it. Whenever I turned this control the glow reduced itself until it reversed direction and began glowing from the top of the text. I tried to center the glow as best as I could but I could not get it perfect. I think this is a convergence control but I am not certain.
I fired up 1944 in advancemame and took a look at the color bars in the service menu. It looks like the blue color is slightly too high on the right side of the monitor. It is not nearly as sharp as the other two. I turned the convergence control as best as I could to minimize the color bleed. I also turned down the contrast, gamma, and brightness to compensate. I got it looking pretty nice, but the screen was kind of dark. So I turned the gamma back up and decided to live with it.
My monitor also has controls onscreen for R:,G:, and B: Drives. I turned the B: drive down by about 8 points and that also seemed help. So now my monitor settings are
Contrast 20
Brightness 0
Red 15
Green 15
Blue 7
Purity S15
Moire minimum
I think the core problem here is a convergence issue with the blue electron gun. What can I do to correct this?
Also, on the back of the monitor I found a small white pot that can be turned to the left and right on one of the motherboards. I turned it all the way to both sides but saw no visible change in picture quality. Any ideas as to what it does?