Many swearwords have issued forth. First indication that something was wrong was that my RCD-991 skipped a few times on a bob dylan CD. I thought little of it, thinking that perhaps the laser rail needed lubing again. Then, later I put a Nitin Sawhney CD in. Told the player to skip to track 9. Click. Click click click. Click. etc. No go No go with any CD beyond the first few tracks, and even then it wouldn't track skip. Off with the lid. No immediately obvious problem, so I put a disc in to see where the problem might lie. Fairly quickly I had my answer. There was something wrong with the laser tracking mechanism. Hmm, what are these bits of white stuff? They're the teeth off the nylon cog that runs the laser along its rail. This is terminal I fear.