Hi, I recently own a Manitou FS and searching after new inner legs. My front fork Manitou 3 are so used and black dip tubes ... are no longer black... I am ready to redeem either a crown with the tubes or a full fork as needed. I am also looking for top adjuster cap (blue piece). Do you know if there are difference between inner legs of Manitou 3 or 4, diameter,etc ?...Thanks for your help