I've been reading a few of these posts. What is the benefit of having the manual locking hubs vs the auto. My autos are working fine now. Should I stick with the if it ain't broke don't fix it, and wait until I need to change them? Also, don't the manuals require you to get out and lock them every time you go in to 4 wheel? I vaguly remember having to do this on the Dodge Ram I drove in the military back in the late 70's.