Thank you for the advice! Sample rate is the same, 48khz.
Video and audio from each of the two cameras used were on separate tracks when I tried to sync in Pluraleyes.
Trying to match up the peaks makes me nervous, because the version I synced myself looked perfect to me. It’s a very minute difference, less than a frame, and I suppose only visible to a highly trained musician.
Is there a way to do this somehow using the timecode of the original video files?