i want to know approximately how potent my tincture will be. tell me if my thinking is incorrect. if i have 10 grams of bud, that is 10,000 milligrams of bud. if the bud is listed at 20% thc, that is 2,000 mg of thc. am i wrong in using this type of calculation. i know that the listed percentages of thc are not exact and i would also not expect to be able to extract 100% of the thc.