A few months back I posted several times regarding an annoying steering
crunch/clunk in my '85 GL.  After replacing just about everything
(steering gear, flexible couplings) between the steering wheel and the
steering rack I finally fixed it for good.  Turns out the u-joint just
before the steering rack was worn.  Got a new one from the dealer for
$118 (far less than any aftermarket unit I was able to find).  Anyway,
it's a relief to have finally got that cleared up.  Steering feels
tighter on center and a weird, very slight rhythmic vibration is gone
too!  If anyone is having clunking/crunching in the steering when
cranking the wheel through sharp, slow speed turns give that u-joint a
check.
Mark