Evap some Naptha so it gets more concentrated and easy for crystals to form, and, the more pulls you do, the less you're gonna get. Say theres 500mg of spice in there, and in the first pull 200 come off, the next one, since there's only 300mg left in there, maybe 130 will come off. third pull there's only 170 left....100 comes off....4th pull theres 70 left...only 50 come off....PerPLexED likes to ramble...point is..the less the concentration, the less you're going to get out of it..