Recently My freehub broke and so I removed the cassette to replace the freehub and noticed, whilst off the bike, 4 of the remaining bolted together 8 sprockets wiggled (4 wiggled together but separately from the other 4). (10 speed shimano hg62-10). I also noticed some scratch marks on the freehub body (see pic) and wondered if this had anything to do with it. Does my cassette need replacing, or is this OK?
