DVCPro50 Captured as DV50 audio falling out of sync

Hi All,
I am working on a rush project right now and have a curious problem.
I have a 2 1:30 shows, with 4 cams each.
I have captured all the footage using the DV50 codec over firewire, and some is beautiful and fine. About 1 out of every 4 tapes, the audio falls terribly out of sync with the video.
It was shot in DVCPro50, 30P. I've changed my sequence settings to match, and the issue still occurs.
Any ideas, answers or suggestions? Any and all help would be appreciated!
Thanks!

I do have those features enabled. Thanks though! The only things I think it could be are either, a.) the cameras were in time sync, so perhaps it is an error in the time code there, or b.) since they were in shooting 30P, I am not using the proper pulldown cadence. Any suggestions?

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DVCPro50 Captured as DV50 audio falling out of sync

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