My BDP 103D can't read some Blu Ray discs, and stops reading a few CDs for several seconds at a time, then resumes reading. I also have a BDP 103 that correctly reads those Blu Ray discs and never has trouble reading CDs. The problem with the 103D started a few months ago. So, most CDs and Blu Ray discs play fine in the 103D, so the issue seems to be disc specific. I'm thinking that the first step to try fixing this is to get a cleaning disc for the player, but which is the best to get? And are there any issues with the cleaning discs damaging the player?