No I got 3g of DMT from 500g "spent" bark or more accurately the soup containing said bark. It seems no matter how long it sits there is always molecule left that Naphtha won't get but Xylene does (along with the fats, oils and trash) which is why I always backsalt when using Xylene and evaporate any residual Xylene on my scientific hot plate before I base and pull with Naphtha. Yes Xylene is harsh, toxic and probably as cancerous as gasoline, that's why I minimize it's use. Using it in my extractions has given me ideas to use it in other very practical ways.

My apologies if I lead you to believe I was getting 6% yield. I average 2.5% including Xylene pulls and backsalting the Naphtha once everything is completely drained.