Qt files audio out off sync in FCE 4

Export from iM6HD-expert settings(DVCPRO) out of sync.
Export from iM6HD-Full Quality and out of sync.
Imported a high quality H.264 clip and audio in sync but needs to be rendered(FCE said 6 hrs for a 20 min clip. and not what I want to do anyway.
Tried to open iM^HD project package and used "save as" in QT. Audio in sync but way to much to render. Also tried to export the audio as a seprate AIFF and no sync.
Thank you kindly

The MiniDisc comments are interesting.
I was first made aware of the MiniDisc's potential when a few years ago a club member demonstrated how over a ten minute test it only drifted by 1 frame.
Then a couple of years ago another chap demonstrated his Digital Voice Recorder which was perfect.
Apart from being a fraction of the cost of a radio mike they have a number of advantages as there is no chance of reception problems and you also have the original audio from the camera as (poor quality) backup should the radio mike fail.
Anyway my slight audio drift is no real problem apart from wasting those five seconds altering the speed in FCE !

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