Truthfully, they're probably fine. For stuff like that, my biggest thing is if I'm going to worry about it or not. Even if I "know" it's safe, if it's entering my head as I ride it's worth the $40 to have peace of mind. I try to use that theory on bike and truck parts. There's nothing worse than being on a trail and constantly feeling like you should stop and check something beyond the normal checks "just in case".