would this reduce the extracted amount? perhaps boiling it longer to counter-act? I like the idea of letting it boil/sit longer and not have to filter so much.

I used my aeropress in combination with a box column drill (using the chuck to press) with good success for the DMT extraction. The point is that with vacuum you get less pressure (1 atmosphere) than with pressing. But still, it is some work to be done.

The freeze precipitation step (I had it from the maxIon tek; put the tea in the fridge for 12h) produced a good amount of stuff settling at the bottom (I used my large pipette to pipette the solution).

And how about storage? Any different than with DMT (i use Zinc de-oxy and silica gel, store it it the fridge for what needs to be accessible and freezer for the long term storage)?

Would one store the manske  result (step 10 of tao tek) and then process further only smaller amounts? How fast does freebase degrade?

And a last one:

defatting with naphta is not necessary (vovin tek step 4) or may it even harm?