conforming the image to 24fps in CT should work.
are there sync pips at head and tail?
(there should be)
if not, find some sort of sync as close to the beginning and and as you can,
then you can start to figure out what’s gone wrong.
here’s how i do it:
find the sync point closest to the beginning.
most likely you check this by lining up pic & sound.
BLADE both at that point.
now find the sync point closest to the end.
blade both here, too
mark in /outs around the picture.
double click the audio into the viewer.
do a FIT TO FILL edit (Shift F11) to some clear tracks
top & tail are in sync,
now you can check for drift,
and from the speed of the audio you might get some clues as to what’s happened
cheers,
nick