I don't often do matrix mixes, if ever.
But recently, in the past year or so, I've had access to some board feeds, using 2 different decks (722 and m-10). For the most part I can align them in post using Vegas by shifting the files at an early audio event like a drum hit and then time-stretching to a similiar event towards the end of the set and everything ends up sounding great.
I've got a sbd+onstage mic recording that is driving me batty. I started the sbd deck (m-10) earlier than the onstage mics (lost 15-30 seconds of first song). I've aligned the first event in Vegas and it sounds 'aligned' then time-stretched the last event, a vocal. Everything lines up and sounds good at both beginning and end, but everything in between quickly begins to skew.
Any thoughts or suggestion? At this point, I'm thinking of just aligning the beginning of the show, doing a quick cross-fade between sbd>aud and then strictly aud from there out...