Yes, a lot of the intractable "impurities" are in fact polymerised DMT. If, using a hot water bath, you heat the naphtha (or, preferably, heptane) with the orange oil it dissolves making a dark yellow/orange solution. On cooling, the orange oil precipitates out again. The dark specks are either bark particles (which in your case I highly doubt, because you used the Buchner filter) or completely degraded DMT, which I've personally observed with prolonged heating of the orange polymer. When freebase DMT solution is left to evaporate in contact with the air it forms a dark tar with black gritty bits, even when protected from most ambient light.
Check out the "
Minimum Polymer" approach for more insight into the nuances of this. Some people prefer the effects of the orange material, which is what I suspect you mean by "full spectrum" - but whether this is due to a slightly different effect from DMT oligomers or a different vaporisation profile I'm not sure any of us can say at present.
Recrystallisation from clean solvent
will get rid of the majority of contaminants derived from poor naphtha. Mini A/B makes for a good clean up method for breaking up oligomers/polymers, especially if you take extra care at the basing stage.
Your writing is fine btw!
“There is a way of manipulating matter and energy so as to produce what modern scientists call 'a field of force'. The field acts on the observer and puts him in a privileged position vis-à-vis the universe. From this position he has access to the realities which are ordinarily hidden from us by time and space, matter and energy. This is what we call the Great Work."
― Jacques Bergier, quoting Fulcanelli