1999 KX125 Idler gear problems
 

I have a 1999 kX 125 and im haveing trubble with my idler gear. i bought the bike and about a week after i bought it the brass bushing went bad and broke into pieces. :( my climber is showing that its supposed to have two Circlip's, the problem is that theres only room for one. idk if its because maybe the Engine in it is newer then '99 but im not sure, if anyone has any idea about what might be going on please PM me. thanks