I bought a 2nd hand hubs. It's a Shimano Dura ace HB 7600. and the dust cone or cover is kinda small and it's exposing the bearings for a millimeter or so. And I have gone to a lot of bike shops (Believe me) and they say they have NONE! and the only way to buy a Dust cone is to ship the Shimano Hb 7600 dust cap from Japan. And I can't afford that and also i can't wait. Help guys even a DIY method would do. or.... That exposure is pretty fine? Need your helps guys