Audio drift when exporting and non-native playback

Hi there,
We shot some footage with the HPX500 and recorded sound straight into the camera. The audio is 48kHz at 16 bit and the video is 720 at 24PN.
The footage is recorded in P2 and then transferred to hard drives and digitized through Final Cut Pro. We are currently using FCP 5.0.4.
Everything is fine with editing and playback on the sequence timeline.
The problem occurs when we start to play it outside the native timeline.
When I pull out the nested sequence into a DV/NTSC 23.98fps timeline, the audio experiences a 3 to 4 frame drift.
When I export the file as a native quicktime, the audio drift occurs too.
Same thing happens when I export and convert a DV/NTSC quicktime.
All the audio settings completely follow its HD source.
Am I missing something?
Thanks.

Did you ever get a solution to this? This happened to me as well, and now they're even off in FCP as well as the export. They used to be all fine.

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