According the factory service bulletin, that is due to "an unfavorable stacking of tolerances." Really.
Originally Posted by ADK46er
I have looking at D90's and most have been stick, but I was looking at a 97 a few weeks ago and it made a noise when the driver put it in reverse. The guy is a Rover mechanic and said they all do that.
If you want me to describe the noise it was like a clunk.