Looks like the detent spring casing, for the shift forks, 2, 1 on each end, so now one of the shift fork rods is not being supported so well, the fork will rub against the gear/shift ring and wear faster.. prob not a major issue untill it gets more worn and sloppy, then you'll need a new/good used shift fork..
I think thats what happens.. Aidan will be along to correct me I'm sure...
