Regarding Kash's LSA extraction tek: Why do you need to move the LSA to a separate solvent at all? Why not just filter the acetone, add an acid to turn the LSA into a salt like LSA tartrate (this should come out of solution because LSA tartrate isn't soluble in acetone (i think)), and pour off the acetone, then wash several times with acetone to remove any residual unwanted material that is soluble in acetone? I've never done anything like this before but I was reading up on some teks and was curious why the extra step is necessary.