Neglected to confirm in the original post that I had already attempted to
change the font size/type of the Comment Text, that seemed to be the ideal
thing to do, but although it looks as if it will let you, the change has no
effect on the text size in actuality.
Thanks Klaus for that suggestion. I don't really like to use the Reviewing
Pane, however in the Reviewing Pane I CAN change font size and type. But I
notice that although the size doesn't change in the balloon the font type
will. SO, I just changed it to a font type that is larger than the average
10 point font that the balloon allows. So, although I didn't solve my
problem at least I put a fairly good patch on it.