First time making RSO. Used 75% everclear cause im canadian and lifes rough. Letting the ethanol evaporate off with the assistance of a magnetic hot plate stirrer. The alcohol is boiling off around 70c, slowly increasing and being held at 109 for 1.5 hours to debarb at the end. What was left was a fair bit of oil, but also this crusty, black, tar like substance on the bottom that seems to have soaked up a lot of oil. Did I overcook it, or is this just plant material/waxes/undesirables that I picked up with a 30min swirl on the magnetic stirrer after lightly grinding the bud? Im reading now that hand-grinding makes a huge difference... just curious as to what I did wrong. Also, SHOULD I be holding at 109c for 1.5 hours to decarb? Im very closely basing this extraction off of the following video: Click to play YouTube Video http://tinypic.com/r/4mdra/9 Huge thank you in advance for you help!