I have a ssr dx3. The front end stem bearings are loose. But when i tighten it, it is so hard to turn and then i ride it and it is loose again once i ride for like 5 minutes. Then i greased the bearings to see if that would help and it didnt do too much. What should i do? Also eventually i was thinking about getting tappered bearings for it, what size fit a ssr sx3 110cc? Any advice will help. Thank you.