I have a losi 8ight with os vg 21, I,m changing clutch bearing alot but my lhs keeps selling me losi bearings for $7 a pair.. I,ve seen I can buy them alot cheaper on line but I dont know what size they are,, ? can anybody help, when I asked what size they were at lhs they said they dont know! just buy the losi brand,,,,, hhhmmmm Thanks