Hi there, SWIMS last changa batch had to be finished in a hurry due to unfortunate circumstances...

Procedure:

STB extraction on MHRB pink powder using (clean)naphtha as solvent
Freeze precipitated crystals were gathered and spread on dishes to evap the remaining naphtha
Naphtha was NOT completely evapped when the spice was mixed with 95% alcohol(for human consumption)
Shredded Caapi and dried Blue Lotus flowers/pedals were added to the alcohol/spice mixture
Changa / enhanced leaf was spread on dishes to dry for 1 week
Normally the changa would be dry by now, and so it seems... however...

SWIM noticed the blue lotus flowers/pedals and some of the caapi parts felt a bit oily/rubbery...
not wet as in moist but also not dry, there is some stretch in it instead of a dry snap.

When SWIM lights one of these pieces with a lighter it seems to ignite heavily and maintain its flame steady.
It will realy burn, releasing a black smoke. When the flame is blown out the black smoke will become the normal white smoke again.

SWIM's feeling is that something is wrong, SWIM tried to smell the black smoke and it seems a bit of a fuel-like smell but that may be false interpretation. SWIM has been reading and googling but the black smoke only turns up in combination with people burning spice. SWIM doesnt think this is the case, because of the flammability of the pedals, it seems something flammable is trapped inside. It could be fats and oils of the herbs themselves but SWIM thinks he knows the difference smell wise.
And since SWIM was using naphtha as solvent, didn't completely dry the spice before making changa, SWIM is thinking the naptha is trapped in the lotus pedals (and some caapi parts), it seems the pedals have a certain structure that support the naphtha more with staying in there compared to the shredded caapi wich seems mostly clean (tested by igniting some shreds with a lighter).

So basically SWIM wants to know:

People that used naphtha as solvent to make changa, seem to talk about a very long evap time (3 weeks or more), could it be that the small amount of naptha still in the spice concentrated in the lotus pedals? and if so will a longer evap time cure this problem or.... could it be that the naphtha will never leave the pedals again...? and ofcourse SWIM should have been more patient, SWIM was maybe a bit foolish to think the naphtha that was still in the spice would evap as normal... due to circumstances SWIM had no choice then to dissolve the spice in a early stage...

I'd say soak that batch of changa in some 91-99% iso at least once, but maybe twice.

When I say soak, I mean add the changa to a shot glass or appropriate sized container. Completely cover the changa with alcohol and put this under a fan for it to evap.

Since naptha is a Non-Polar solvent, it should seep out into and on top of the alcohol and evaporate.

That should help you remove any traces of naptha that might be in there.

Just lay it flat on a paper plate for the last run.

Check the changa prep in my sig. for future reference. It'll save ya a lot of undue stress.

Good luck on saving your changa and Welcome to the Nexus.