improving kif????

i receivd some shake recently and it has a lot of crystals but when i put it through my box the kif is really green and doesnt hand press very easily is there a way to take some of the material out that i dont want in it????? so i can press some fire hash.:)

use smaller screen or readjust your seiving method....or the shake is far too ground up and its letting weed leaf dust fall through with the trichomes...