Zoom H1 audio gradually goes out of sync with EX3 footage in FCP7.

EDIT: This has now been solved. For anybody interested, it was to do with the 'Easy Setup' in FCP7. I had to ensure PAL and 25fps was selected (it wasn't). Then I had to restart FCP7 then re-import all my files (there was only 4, no big deal) and then everything synced fine.

Hi guys, this is my first post, so, hello

I've shot a show using an EX3 and a Zoom H1 recorder. I've tried to sync the Zoom audio (48khz, WAV) with the EX3 footage and, whilst it starts off OK, it slowly drifts off out of sync. Philip Bloom has kindly given me some pointers to do with setting up frame rates in the capture settings (sounds odd, but it needed to be done apparently), but nothing has made any difference.

I've synced everything in Plural Eyes 3 and the initial playback (within Plural Eyes) is spot on. Bring it back into FCP 7 and it drifts out of sync again.

Does anybody have any advice, tips or information that could help with this? I need to finish the edit by the weekend so the pressure is on.

Many thanks in advance,
Jonny.