FS7 / Zoom F8 … not in sync

Hello dear forum,
We are having a fairly simple setup here: One Tentacle E gives audio TC into a Sony FS7. The other Tentacle E is giving TC into a Zoom F8 recorder. Both tentacles link nicely through the phone app. When I drag all the files into the Sync Studio software, all TC info is found and the files line up nicely on the timeline. I export XML to Premiere: And the audio and video are not in sync. Audio is one second and some frames ahead of the video. All devices are set on 24 FPS.
Any ideas?
Thank you. 🙂