Did you measure the frame height to see if it is not 4" or 5"? My 2014 24FBS was dealer installed with no additional hardware needed. There is no gap, as Equalizer discussed.
2014 Jayflight 24FBS Elite
2009 F150 Supercab, 5.4L ,3.73, HD Tow Package, Equal-i-zer 1K,
Progressive EMS-LCHW30, TST 507RV TPMS, Hydro Life HL-200, Maxxis 8008.
Best friend wife and dog Cooper. RETIRED 6/30/16. WOOHOO! Now the "endless summer" begins.