Sorry if this has been asked and answered before - I did try to search for it first.  I bought the stock crossbars without doing my research first.  I really don't want to pay more $$ for aftermarket crossbars now.  I am looking at the Yakima rocketbox 15s and wondering if it will adjust to fit the stock crossbars?  Anyone used this box on the stock bars?  I have no experience using a cargo box or roof racks as this is my first SUV/Crossover.  I have to find something that will work though b/c we have two kiddos now and are heading to the beach this summer.   
  
thanks!