[texhax] could someone give me an explanation as to why fontsize fails with an overfull box

[Bob Tennent]

 >|Unfortunately I couldn't get past the 14.0908 for
 >|the font size when having a math font for example
 >|or a 16.09 when having anything else, before the
 >|textwidth for the document got thrown off.

What does "textwidth for the document got thrown off" mean?
It's not clear what exactly your problem is.

Bob T.