So I made some oil using the oldschoolgrower's technique, except I didn't put the Evap dish over heat like he does. I just lEt it sit for two days with a fan blowing on it by the window. Then it put it in the freezer for a bit and scraped it up. When I went to smoke it I noticed a lot of crackling, so I decided to purge it over simmering/boiling water. The thing is I've been purging it for hours and there's still a lot of bubbles and it still crackles. Is it possible the ISO is somehow locked in there?