RC8 front inner bearing ????
 

Hello people

I have borrowed an rc8 for the weekends racing at braxted only too have run it up on the bench before practice noticed the front wheel was loose and on further inspection found the inner bearing has fallen apart. the inner and outer bearing on the rc8 are different sizes and i dont have a book to find out what size they are!
i only need one bearing and dont want to buy a set,
could anyone help me out with a bearing or the size i need to replace it.

many thanks

mike