[W124] front-end creak

[Scott]

I have a noise in the front end that occurs usually when I
brake while backing up, but sometimes during hard braking
going forward.  The sound is a loud creaking sound - like a
heavy metal gate being opened on rusted hinges.  It is not a
continuous sound, but is heard ONLY momentarily during the
transition time when the brakes are first applied and the
suspension is absorbing a lot of energy.  It seems that it
May occur as the suspension settles from a hard stop as
well.  Definitely coming from the front.

Lower ball joints, rod ends, drag link, & steering box have
all been replaced recently - I expected the noise to go away
when that was done, but it didn't change.  

Any thoughts?

Thanks,
Scott Kelley