I think you are better off trying to recover by making a copy. A repair kit will never get you back to the original. If this is an important disk, you should back it up anyway.
Try Exact Audio Copy first. This tool is free and depending on your hardware can do wonders. Use the autodetect features. If your drive supports C2 error reporting (see the EAC documentation) you may be OK.
The next line of defence is payware. CDRoller works for me. I have recovered disks that nothing else worked on.