Sorry, I would say Motion is NOT the best program for what you want to do. It was built for motion graphics, not clean up duties. There are other methods out there that are used to remove dirt and scractches...
But that's beside the point. WHY are you going to DVD from a work print?? A work print is supposed to be dirty and messed up, and it's only used for approval purposes. It's usually not even color-timed correctly. You need to go back and cut the negative and then have it timed correctly and THEN have that scanned and encoded.