I took the plunge and opened up the M700 and DV700 over the holidays after my DV700 was giving me some import issues. I have imported probably around 500 disks into the DV700 over its lifetime. The rollers were filthy. I wish I had taken pictures. They are supposed to be white and mine were completely black. I always clean a disk before inserting. I don't understand how they can become so dirty. My thought is to have a disk counter/import option on both that can serve as a possible reminder to clean the rollers. Around 500 seems to be a reasonable number. I followed the cleaning procedures using Pec-Pads and alcohol and they look like new and perform as such also. Just a quick reminder for some preventive maintenance if you are around 500 imports or so. Happy New Year!