Urgent: Nudging files by custom frame grid


Were working on a film and weve had a reel come back to us that has an added investor logo at the beginning of the film, which has had the effect of offsetting the 2pop timecode points for all our cues in the reel by 226 frames (were working at 24fps). Is there some way i can adjust the timecode grid to a value higher than 2 frames so i can easily move the files accordingly to the new positions in the film.

Or what is the easiest way to do this? Or do i offset the video? But how do I calculate the offset?