i have used fit to fill for this sort of thing.
with your 25 fps version in a timeline,
and your 23.976 version in the viewer
find identical sync points at the head and tail of both versions,
then do a fit-to-fill edit. (F11, or use the green overlay if you drag to the canvas)
but really, i think you need that 23.976 video as well as the audio .
that will hope you find if there are any areas where the cut is different.
nick