that's true for eveything, try to get it right in the first place and tweak as little as possible later.
I play with alot of settings on the amp (including preamp- and poweramp-tubes and bias etc) then try the different speakers and mic-positions (a mm makes a huge difference sometimes)...I use stonepicks (and in this case urged Gavin to use one as well)..and all the other things
I gotta admit that I'm a bit crazy though, I even change Batterytypes in pedals for AB-tests

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it's really all the tiny things that add up IMO (like how hard you drive the mic-pre etc).
If everything is as good as you can get it before it goes to tape you should not need much EQ, at least definitely not for fixing stuff that wasn't there in the first place