OK here is the sitch
I have done this type of project several times through several iterations of the software, I am slow and a bit OCD, my own recordings have been from different cams as well as MT2 and then the M-10.
The recordings I have gotten from others are a variety of cams and the Edirol and M-10 for audio (normally 24/48 or 24/96).
So here is how the project goes
multicam HD with matrix audio, generally I master the audio separately in Wavelab and then do the assembly and multicam edit in Vegas
everything starts out well but by the middle of the 3 hour show the audio is not still in sync and by isolating each pair of audio tracks against each other I find the Edirol is a tiny bit shorter (originally I thought it was a little bit faster).
I tried to time stretch the Edirol recordings but really I suck at that and wasn't able to get a satisfactory stretch over the 3 hour set that made everything match up and I tried on one particular piece a total of 14 times before giving up that method.
I eventually inserted tiny pieces of silence in the Edirol recording at a few places through the show, but again it was better but not "right".
Honestly it didn't really occur to me until recently to spend more time and look at alignment of each segment against each other on both sides for alignment. I knew that most HD video has small audio drops at the splits and discovered that my Panny drops three audio frames while maintaining the video at each split. Vegas automatically joins up the different files "seamlessly" so it just didn't occur to me that the R09HR didn't behave like the M-10. when listening to a L/R comp of the 2 nicest sources of the most recent project I realized that everything was luscious and yummy till right after the first Edirol split where some nice concussive snare hits were out of sync. BLAMMO problem solved, it dropped about 3.5 frames at each split. I listened to the audio without any other source and I could hear the tiny problem, but asked some family members to listen to the segment and asked them if they heard a problem and they said "no". It's short enough to sound seamless by itself unless you already know there is an issue.
I'll post up some audio evidence later tonight, busy day today
Dave