I'm having an issue with a Navigation Widget I put in one of my Mashups. I have the style set to a style definition that uses Large text but the text within the Navigation Widget will not increase in size.
Are you running the latest version of ThingWorx? The issue with the Navigation widget not honoring the text-size specified in its +Style Definition +is resolved in 4.2.
Just to follow up:
I sent you an email with details for upgrading ThingWorx.