Ill actually answer the dudes question:
The plant should be equal in THC all over the place in the flower... the calyxes probably contain the most thc of the
actual bud structure.. from the calyxes grow the pistils, or 'hairs'... the calyxes, and most of the bud are covered in trichomes, which contain
many different cannabinoids. Including THC. Most of the cannabinoids play psychoactive roles.. infact they think CBN is responsible for most medicinal properties of cannabis.. so don't think JUST THC when you think weed.
Anyway most of the THC is in the trichomes, which grow on the buds, and a little bit onto the leaves... the trichomes serve to protect the plant from drying out, or being radiated with certain uv rays.. think sunblock
So THC pretty much exists in TRACE amounts in the regular plant matter (stems/leaves).. it exists MORESO in the actual calyx matter, and exists MOST in the trichomes (crystals) / resin.
THC does not slide down the inside, or outside of a plant with gravity.. its in there, and on there.