Just wondering what sort of warranty there is with Roval wheels, or what it covers exactly. Was play so got freehub bearings replaced. Didn't sound right after putting it on. Had it off and on a few times still same. Last time removed the cap in picture was left inside cassette. Back together anyway but sounds rough as anything as if teeth inside wheel hub was damaged ?. Cap looks damaged this was the cap that no-one knew how to remove.