Another thing to consider is the ripping speed. The higher the ripping speed, the faster the disc turns and the more likely that an iffy tracking mechanism is not going to be able to keep up.
I say try ripping at a slower rip speed and see what's up.
EAC Automatically slows down the speed of the unit as it runs into difficulty. (An ugly aspect of this is that once it gets past the difficult part, it doesn't speed back up again, so if there is damage on the first track, even though the rest of the CD might be pristine, the remainder of the rip is at the slower speed.) In the case of the CDs I'm trying to rip, it works its way up to about 24x, then when it hits the last few tracks I hear the platter speed going slower and slower until I can't hear it at all and watch the 24x slowly degrade down towards zero over a period of 5--10 minutes.
One of the CDs showed a total file usage in excess of 710 MB, which I thought was "against the rules". Perhaps the maker of the CDs did this in an effort to prevent copying?
tanstaafl.