i've seen some pretty nasty peugeot setups with stock clutches, maybe something else in your setup is off and tearing them up? maybe you just have a bonkers nutty setup? if the clutch basket is warped or something and only 2 fingers are bearing all the load, i could see it doing that.
seems like the next weak point in the stock clutch is the sliding pads where the weights push on the sheave. the plastic deteriorates telling you its time to upgrade your variator.