Bizarre audio drift

Please Obi-Wan you are my only help. Been lurking the forum for years and know the usual culprits of audio drift.

Scenario:

1. Shot 30p footage on Sony a6400.
2. Recorded audio in Logic Pro at 48khz.
3. Using FCP project at 29.97

Suddenly yesterday the audio drifts in the timeline as if it is 44.1khz. 

I did recently get a new audio interface, so I made another video with the old interface and the problem was still there.

I have made ZERO changes to anything on my camera and anything on Logic or Final Cut.

Have made hundreds of videos for my youtube channel and others for years and this is the first time I have seen this happen. 

Attachments for proof.

Any ideas?