im talking about yoda's dmt extraction, not dxm, for smokeable crystals
Naptha is only good if you want to use it to extract junk from your acid solution prior to making it basic and extracting the goodies. The problem with naptha is not just non-volatiles, it also is just not a good solvent for the substances of interest. You need ether, dichloromethane, toluene or even xylene to extract the good stuff. Ether or dichloromethane are the best choices - good solubility of the desired substances in these solvents and easy evaporation of the solvents. Dichloromethane has an advantage over ether in that it is not flammable and so you are less likely to blow up your apartment. Toluene and xylene have much higher boiling points and are thus harder to eveporate.