Yes , pull it a second time . Bho will get trapped in the middle to lower section, eapecially in a glass tube , as u can see by The oil that is also stuck to the glass . Let it sit for a half or so , too warm back up a bit , then hit it with half a can or untill the butane flows clear from your filter . Ive also heard of people running a 91%+ rubbing alcohol thru the extractor and buds after to pull the oils out , then just evaporate it like u would normally. (purge) i generally pull 1.25-1.5g of Bho per first pull , then an additional .3-.5 on second pull . I pull the second pull into pyrex that has a first pull from my second tube in.it , so i mix fresh pull with second pull to keep uniformity in chemical content, no weak suace . Hope this helps