I spoke with the guys at lane one about the stacked "myth" I was told that for the majority of users, the core when in a stacked position, "wobbles" and does not make it to the prefered spin axis thus hits weakly, reacts weakly, flat pins, washouts. now that being said, notice I said majority, or a group of those users, there will always be some that it will work for and be a god send.
That being said 302, give me specifics on each ball, you said 3 of them are stacked right? what are the pins, the pin placement, starting weights, ending weights and x hole locations if you have them