Hi potato,
One thing that I do sometimes is keep all your re-x sludge and jars, utensils, filters, etc that still have remnants of DMT on them, and do a vinegar water wash on them, then mini A/B when I'm running low on spice.
Or, I just keep the acidic water on hand and add it to my next extraction.
I tend to swap out and clean my copper mesh and pipe often to keep dosing accurate, and there is usually a lot more "leftovers" than I think there is.
I do about 3 small naphtha pulls when doing a re-x as well.
Even if the last bit is a lower quality with more fats, it's still good for enhanced leaf.
May as well get everything I can out of my precious bark.
Take care