Nick, thanks so much, this did the trick!!
I can’t figure out how the TC got screwed up , but I’m pretty sure it has something to do with some of the audio being recorded at 44.1K and some at 48K. Even though I’m not using any of the audio in my final edit, the audio settings on the two files that were giving me the problem were originally recorded at 44.1, but the settings in FCP are at 48K. So I’m guessing keeping everything consistent at 48K from start to finish might avoid this issue. Thanks everyone for your input!