ok so i gota change my rotor i take the hub "cover " off and there is some kind of cap around the spring and actual hub its self....there is no lock ring or anything around it how do i get that off?....i take the left side off (driver side) and there is no cap (unless its in the cover) and the spring comes with the cover..i took the lock ring off the hub and gota figure out a way to get the clips up to slide the hub out any advice from anyone would be awesome...thanks