Just reporting back on my above-mentioned changa. First off, I used black caapi, and this particular variety was crazy with the vibrations. The first time i tried it it was somewhat overwhelming physically. The second time I fell in love. Interestingly, to me, this was very much identical to traditional ayahuasca brews I've had from shamans in Hawaii, Brazil, and Peru. But it only lasted about 5-7 minutes. Then i'd hit the bong for more. So, the next batch I will double the amount of caapi and dmt in the ISO (making it 1g leaf mix: 2g dmt: 20g caapi) hoping that extends the duration a bit and the potency so I don't have to smoke so much.... It may be that I'll have to do a more targeted alkaloid extraction from the caapi and add that to the mix...