changed a cassette at the weekend on a hope freehub, and upon putting the cassette back on i noticed one of the rivets (the bits that engage/stick out on the freehub, various shapes that the cassette slides onto etc) was slightly missing a chunk of it on one of the raised bits (sorry for the poor description), only on one rivet and the whole cassette seemed to fit on fine and lock into place ok....question is should a be worried? the chunk missing off the raised bit only about .5cm if that but the width of one of the raised bits so about .5cm by .5cm ....is it going to catistrophically fail on me? i would have thought as the remainder of the raised bits on the free hub would have enough strength to hold it in place, with this missing bit?
sorry for the totally piss poor description
ohhh and also whats that tiny bit of metal on the bottom of cassette smallest cog, sits inbetween that and the lockring? really flimsy piece of metal? any importance as mine was crushed when tightening



