Can I pull a different Google Font weight?

Hi

I recently resolved an issue with an embedded booking system where the fonts on my website menu bar on any page that included the booking system would sharpen noticably and the menu would drop onto 2 lines.

The issue was that the booking system CSS is pulling the following

@import url(https://fonts.googleapis.com/css?family=Arimo:400,700);

and the vantage theme pulls the following

@import url(https://fonts.googleapis.com/css?family=Arimo:400)

Is there any way that I can get vantage to pull the 700 font weight as well? This makes the fonts much, much sharper.

Cheers
Dave