I need something to be cleared up about the bearings on my axle on my 92 magnum 8 by 8. All of my bearings have set screws and no locking collars and they all stay in place except my front one with the bearing extension. Ever since I took it apart it kept coming out of place while driving(pain in the a&$) I took it apart and found the outer bearing had the set screws loose and not tighned so it never came out yet and I jacked it up and tried pulling it out and it was solid.i don't want it to happen again becuase the chain comes off and eats the sprocket. So is there supposed to be locking collars or was it just my fault I forgot to tighne the outer bearing set screw? Also there is no place or hole in the axle on the end for the set screw to go into will the set screw still work the same without it? Is that just how the axle is made? Without holes for set Screw?