i've seen the superlight marvic/akront wheels crack at the clevis where the rim bolts in, as if the rim is too narrow and the bolts tightened too much, pulling the clevis together. not that i believe that is the case, but that's what it looks like visually to paint a picture.
also i've seen the bolts come loose and the holes elongate.
lovely wheel, not sure if they're actually that light now that i think about it. haven't held one for a long time.
know all wanker