You did not say that you did the - conform to - step after you opened the socks. If you do a pose with clothinng item selected, or the clothing figure does not follow the pose for some reason, - conform to - after the pose will usually set the item in place. Lock actor - not sure, but I think that works best with props and hair props. If the sock is a prop, it will not point with the foot. If it had a morph to point it, it may ignore the morph directions, if it was locked.