About a month 1/2 ago i picked up a durablue eliminator axle for $40. its missing all hardware except the locking nut. it will soon be time that i start my quest for parts but my question is. on the axle nut that locks the axle to the carrier it has a inner threaded sleeve that slides on the axle and a outer nut that screws on to the sleeve. the question is , is that when its screwed on it still slides off. am i missing something? i dont get it. i dont understand the concept of this damn locknut. i can get pics if needed.