My Rega Planet 2000 is Making Noise

Hi all... My problem is that whenever I listen to music at low levels I can hear noise from my Rega Planet 2K. (I'm sure its happening at high levels as well, but I'm not able to hear it.) It seems to be coming from the mechanism that spins the CD. Is this normal? Have any of you users had a similar problem?

I have the original Planet. On it, the black puck that clamps the center of the disk was coming apart. It was visually apparent since the top was higher than normal. It's a two piece puck that's press fit together. All that was needed was to push the pieces back together.
Thanks Guinness... And Happy St. Pats... I guess no one else has had the problem...