lol you did not cook off the iso lol when u do it and i do it all the time i got a singal eletric burner from wallmart place a pot of water on the burner on top of that place your pan of iso and THC takes 20 to 30 min to cook off the iso use the eletric burner so there is no open flame and do it out side so it is vented with is setup you can use the 71% iso but i still use the 99%