im driving a 90 bronco with automatic hubs. i need to replace the studs on one rotor. i removed the hub assembly up until the first bearing adjustment nut??? the outer locknut from this picture bearing adjustment . i have the spanner wrench used to remove it but all it is doing is spinning. is there a trick to get this locknut off. also i read that the scond locknut may be cross threaded is this a valid assumption. thanks for the help