I've tried using audio delay and changing the frame rate to sync the audio. No luck.
I tried the above tweak of preserving 30fps and converting back to 23.976. No luck.
I tried using dgindex's bad frame/field (.d2v.bad) file. No luck.
I tried preserving all 30 frames deinterlacing with kerneldeint for 30frame progessive. No luck.
This is kicking my butt. I'm out of every single brilliant idea in my head.
If there is anyone who thinks he can make this thing a properly sync'ed Xvid you have my blessing, 'cause I've got nothing.