Waveforms look good, audio is horrible

Captured video shot with Sony V1U.
Shotgun mic in channel 1, wireless lav in channel 2.
Monitored capture (via DVCAM deck) on TV--video and audio were fine.
In canvas, clips look fine, waveforms look fine, but audio from channel 2 is muted and noisy.
When clips are dragged in the timeline, shotgun audio directs to A1 and A2, and wireless to A3 and A4. Waveforms for the audio are in A1 and A4. If audio in A4 is dragged up into A3, the sound returns to fine.
Has anyone had this happen before?
Again, during capture, the audio sounded fine.
In FCP, the waveforms look fine, but the audio from channel 2 is very muted.
Once audio is put onto A3 (and not A4), audio sounds fine.
This has happened with previous projects; as long as the audio is on an odd-numbered channel, it sounds fine. If audio is on A2 or A4, it sounds horrible.
Please help!

Try dropping the audio into Soundtrack Pro. If you have no issues there then you must have a settings problem with your sequence.
You could try right clicking on a piece of footage and select " make multi-clip sequence' this will make a sequence native to your footage and it may help.
What are the settings you are using? Are you recording HDV?
FCP can be quite stubborn with audio.
If the audio is fine in soundtrack pro > export it and play it in the timeline again. If no issues appear then you have a glitch somewhere on the timeline settings I think.
Anyone got another idea?

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