Found my own answer, in Webfocus 5.32 in order to make a stack graph work to size the font of the data you had to use the API set commands of
-*setCustomDataText (getSeries (2), true);
-*setCustomDataText (getSeries (1), true);
-*setCustomDataText (getSeries (0), true);
-*setTextFormatPreset(getDataText (2), 4);
-*setTextFormatPreset(getDataText (1), 4);
-*setTextFormatPreset(getDataText (0), 4);
Having defined the output to be an integer was not working with the the upgrade thereby causing all my numbers (i.e 7 to be 700.00%) In 7.13 taking this out makes the graph work fine.
Hope this helps someone else.
WebFOCUS 7.1.3 on Win 2000