changing the font size of chord names in Tabledit

Hi all.  In Tabledit I use the Text Manager function to indicate chord names (D, F#m, etc) above the tablature.  In an arrangement I am currently tabbing, the font size of those names has changed.  The last few are bigger and in bold.  I like the change but did not do it on purpose.  Can someone tell me how to adjust the font of the chord names when using the Text Manager function?

Thanks!