Combat Flight Simulator 2 (#2 CD backup)

[DBH]

Unable to backup the # 2 CD for my Combat Flight Simulator 2. I have tried the registered version of Clone CD and Nero however, when the software attempts to read the CD, the reader nearly stops. My copy protection detection software does not reflect and copy protection on the CD. The #1 CD is copy protected by safeDisk which I am able to back up with out a problem. I thought I may have a bad origional CD but it installs fine from the origional CDs. Anyone else having this problem?