Ive been having a few problems with low yields during freeze precips the last week. Low yields, hard to get the dmt out of the mason jar, and a seemingly low purity. I tried a few different fixes. First, i let the naptha soak much longer, first 20 hours, then 24 hours. That didnt help much. I tried evaporating in a dish, then freezing. This still didnt work. I settled on 24 hour naptha soak, then a plain air evaporation. What could I be doing wrong here?