I'm feeling this pain right now, as the band I'm in is recording it's EP.
I play guitar in the band, but I'm also playing the role of tracking engineer, producer (whatever it is that it really implies?) and mix engineer.
The songs are fairly well rehearsed as they've been played out 100's of times by now, but there are still things that I'm finding NOW, that I should have found earlier... like slight inconsistancies with tempo, or a clammed kick drum hit. I can't believe I didn't catch them while tracking, but of course it stands to reason because while tracking I was thinking about how it *sounded* sonically, and not as focused on the performance.
So now I stress about *when* am I going to fix it? Should I re-track? Should I fix it in the DAW? Before or after bass overdubs? Definitely before vocal overdubs, but I'm in the middle of recording guitars...
Anyhow, yeah.
I'm learnig how to manage these things though, and figuring out a better *methodology* to doing it, and I think that's the crucial part of tracking, mixing or producing.
Ramble on.