time stretch - matching time

I have a clip that is approximately 1:25 that I wanted to speed up to 1:15:17  in Premier.

But the sound is horrible.

So I unlinked the audio and video in the clip, changed the video time to 1:15:17 in premier, and opened the audio in Audition.

Using the time and pitch / stretch to retime the audio to 1:15:17, but when it goes back to Premier the audio is only 1:15:05 seconds, leaving my audio out of sync with the video... 

I've tried using the same percentage for both audio and video with similar results.

I'm guessing this is user error, but I can't see what I'm doing to not get the desired results.

How do I get Audition to give me a specific time length so it will sync with my video??

Thanks for your feedback!