so, it seems like at some point i time shifted the track to 25:00, then i recorded extra overdubs after i time shifted. that explains why it's just a little bit out of sync. but because there were gaps in the rip it's not as simple as just shifting it back.
i'm going to do this the other way around: i'm going to time shift the overdubs back to the original length, then time shift it back to 25:00. it's not going to be identical to the two final 2002 mixes - it can't be.
the only other answer is to rebuild it, but i've tried doing this repeatedly and the blunt truth is that i can't. i can rebuild the first section, but the wave editing in the second half of the track isn't reproducible.
it's not going to be inaudible - you're going to hear a slight delay if you play the three tracks simultaneously. but who's going to do that? and it's the best i can do with it....