Need help with Thule Mazda3 setup


2002 Mazda Protege5 & 2007 Mazda 3 GT
So I got a Thule 480R foot pack and aero bars with the 1302 kit. I measured the bar length between the two feet which was given to be 38 1/4. But, when I have the feet at this length, its way to short.

Any help with Thule roof racks?