Just had a real good 4wd place install a lock-rite locker in my front differential. Now, I'm getting a sound that for all the world sounds like pieces of metal hanging down dragging on the road when i drive. You can hear it and slow speeds just not real loud. At 40mph it's near deafining. They say it might be normal for the locker to have some noise associated with it, but, probably not this much. What do you think ? Do lockers have an inherent noise ? If not, what do you think it might be ? Especially for the Lock-Rite ?