The disks seems to be pretty readable without any significant problems, but it's not a one-off error. I've burnt a few more of these CD's since, and a spike still shows up somewhere. At times, it even shows a block of C2 errors. That's what worries me. The error rate isn't bad, but leaves something to be desired.
Maybe the 1653 has issues reading cd-r disks?
Abalone, what do you mean by blank the eeprom?
Thanks again everyone...