The freehand 2 comes with two metal spacers that on the instructions, it says they are for “advanced play.” The spacers are slightly (like 1/2 mm) thinner than the brass ones that are already put in the yoyo… I think I’m supposed to keep the brass ones on and add the spacers with them, because replacing the thicker spacers with the thinner ones will make it more responsive. (I’m going on and on, aren’t I? lol)
EDIT: Just for clarification, the brass spacers are exactly the same as the metal ones, excapt for the fact that the metal ones are a tad bit thinner (not as high.)