It's normal Lynne . The Sugion OEM rings as Ryan summised do have various shift "aids" that could be called "shavings" by some ! Yes, they may look a bit worn or even like a sharks fin from a glance. Their OEM rings are not like the standard(not high end Sugino, those and these are different) whose teeth are all uniform and "full" size.
I have multiple Sugino cranks with these rings and they all look like that. I first wondered why the teeth seemed to wear so quickly ! Then I realized it was the shaping of the teeth and not fast wear . The shop realy has nothing to replace then , but they may put on a standard ring if they are not aware that all OEM Sugino's appear a bit "used" when they are not. You can easily tell the diffenence between actual worn and used teeth and a brand new ring with the shift aids, that is if you look before you ride on them ! -- You received this message because you are subscribed to the Google Groups "RBW Owners Bunch" group. To unsubscribe from this group and stop receiving emails from it, send an email to rbw-owners-bunch+unsubscr...@googlegroups.com. To post to this group, send email to rbw-owners-bunch@googlegroups.com. Visit this group at http://groups.google.com/group/rbw-owners-bunch. For more options, visit https://groups.google.com/d/optout.