Post Carousel

Hello,

I want to know how do I limit the number os pages with posts using the widget Post Corousel. After I limited the posts-per-page, when I use “next” button, it displays until the last post, but leaves a lot of space without nothing beside as you can see here: http://www.valvularock.com.br/wp/.

Wait for your help, thanks.

URL: http://www.valvularock.com.br/wp/