Last row is incomplete in justified layout

First of all, thank you for your plugin! This is a really artistic and easy-to-use plugin!

I’m building a blog and using a justified layout for the feed. The limit per page is defined by the number of posts (6 in my case) and the last row not necessarily will be complete (depending on the ratio of post thumbnails). Is there a way to set a limit per number of rows? Or let VP to add items from the next page as there is space left?

The content will be dynamic so it would be impossible to predict the number of posts on the page after adding a new one.
Thanks in advance!

The page I need help with: [log in to see the link]