Originally Posted by
lakeflaccid
Are the discs getting scratched at all? If you lay the disc on the spindle and turn it with your hand, can you hear the noise?
Do you mean the spindle that the disc rests on (and is connected to the motor to make the disc spin) is crooked? If so, I'd guess the spindle has dropped down (at least partially) for whatever reason. I've never had this happen on a Sega CD, but I think it does happen every once in a while. (I'm not certain, though. I seem to vaguely remember reading about it.)