First thanks for this plugin.
I have a problem when trying to set the width and height of the stars in the admin section to other than the default.
I changed to 20px the width and height but it doesn't change in the frontend.
Also it doesn't display the correct number of stars. Should be 5 but only appears 3...
I'm using WP3.5 and TwentyTwelve. No other plugins.
You can see the problem in this page: