ok a bit more weirdness on the files that  29.9625 FPS - I'm looking at the files we send and the files we received back, for example one of the files we sent was 8:14 @ 29.97 and it came back as 10:17 @ 29.9625. They only had the footage we gave them and they were color correcting on a software DaVinci. My only thought is they ingested the footage as some funky frame rate and then exported it at something close to 29.97. Does this even sound plausible to anyone who uses a DaVinci? any other ideas - just trying to track this down so that it doesn't happen again, don't want to go into this fight with a little more knowledge.