Mike, this (see attached pic) is the Compatibility tab in the Properties for my fsx.exe file, I think it may be different from yours...? I don't have a "system (enhanced)" selection in a pull-down menu.
I'm going to take another shot at changing the font size in the skins/style file with a larger number, if that doesn't work I'm gonna pack it in and go back to doing some normal flying. I'm due for new glasses, maybe then I can read the Shift+Z info lines better.

Click image for larger version. 

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