How to correct frequent short pitch and speed variations working with Spectral Pitch display or...

I work with an Archive of single speaker talks. Some have recording or transfer errors where the voice slows down and/or speeds up randomly every few seconds. Anyone have experience repairing these kind of files? There is supposed to be a way to do this in Audition, but even the support people can't find it. The manual mentions the Spectral Pitch display, but the prcedure described foesn't exist in the latest version of Auduin. Any ideas?