A few additions to this tek
800ml water might not be enough, if you are using pre-powdered mhrb you will want to use more water, with 800ml it will probably still be very sludgy. Nomans tek calls for about25-30ml water per gram of bark. 2lt or about works for me.
75-100ml naptha is way too much, you want to use say 40-50ml naptha per pull and do say 5 pulls(or pull till nothing more comes out). So stir in the first 40ml of naptha, dont shake it, just roll it over. let it separate( should take say 10min or so) stir it up again and let separate, do this a third time and after its separated then pull the naptha out( here you can either a) freeze precip the pull while the next batch of naptha is soaking in the mhrb soup or b) collect all the naptha pulls and freeze precip together). Add the next 40ml naptha and repeat what you just did with the first pull, but this time allow the naptha to sit a little longer. Repeat this process about 5 times or till no more dmt is migrating over to the naptha.
You could also warm up your naptha a little before you add it to the soup(warm naptha pulls more dmt but also pulls more oils).
One last thing, using a mason jar with a wide mouth make life very difficult when you try and get the naptha out. I like to use then HDPE milk bottles, the neck is narrow which makes for less surface area for the naptha to cover which makes it easier to suck up the naptha. Although sucking up some of the black soup along the way isnt a problem, just siphon off the naptha into some sort of thin tall shotglass. Then you can just let the black sludge settle and decant the naptha out of the shotglass into your freeze precip container, beeing sure to leave the bkack soup in the shotglass. Hope that made sence

If you run into any problems just shout, their are plenty a helping minds here.
Oh ya, try not to fall over when you see that snowglobe of dmt in the freezer. That has got be one of the most rewarding feelings of the extraction process.
And, read through this
https://wiki.dmt-nexus.me/Noman%27s_tek