More than 4 columns
 

Hi we have tried to recreate the responsive design to emulate the showcase website http://www.shopbaldinini.com/
We purchased the responsive module too. However we have found that it will not let us stretch to more than 4 columns no matter what we do, the site quoted above scales to as many columns as the screen will handle.
Anyone got any ideas for a workaround on this 4 column limit?