Don't cook the base (the NaOH) or the naphtha the heat from the exothermic reaction with the NaOH is enough to heat the naptha if you do it at the same time for hot pulls.

Acuminata can be tricky sometimes. If you use heated shelitte it'll help but you'll want to shake it if you want the highest yeild if you get emulsion just add alittle more NaOH and shake again, repeat until the emulsion dissapears.

Doing this will result in higher yeild but form polymer dmt so it'll form a wax once you freeze precipiate and scrape it up.

Then use xylene on ya last pull too, this will help get the remaining dmt, do it separate to the naptha pulls (don't combine) and evaporate the xylene instead of freeze precipitate. It'll form an oil on evaporation, the oil is still majority dmt and can be used for changa it'll usually smells fruity too.

You could try evaporating some naphtha to increase concentration and freeze precipitate more dmt (but it shouldn't be necessary).

Waxy dmt is easy to work with and vape etc, no disadvantage over crystal dmt. Doing it like that will maximise yeild.

There are other ways salting dmt out etc using different solvents but that's the more straight forward way when working with acuminata. You should get approx 1.4-1.8% doing it that way.