Mine will fire out and hit the right flipper and then bounce over to the left 90% of the time. That last 10% of the time it'll fire out faster, hit the right flipper and bounce over to the left sling. That 10% is tough to recover from, but I like the randomness of it.
Mine was originally missing 3 of the 4 fins on the cup. It's been replaced, but I still have variance in how it fires. Having 3 fins missing probably caused the plunger to wear unevenly hence the odd eject every once and a while.Usually if there is variance it would be related to uneven wear on the kicker/vuk 'cup', a loose or misaligned bracket or a cracked well in the curved scoop.