Curious . . . when you mentioned retainer wear I just assumed wear in the retainer locks. Never seen wear on the retainers themselves . . .
Haven't wrenched on a v-thingie in a long time - memory suggests that those retainers are smaller diameter.
In addition, when inter changing 'seemingly' similar valve components beware that some are built around 3/8 valve stems and others around 11/32 . . . mixing will affect installed spring heights. Mix locks between these diameters and things will break.
regards,
stock49
