that guy is correct, ive broken 1 pair of heads every year for the past 3 years...but the skis ride amazing and i get them dirt cheap so its all good.
but yea i did the same as u, the edges craked from heavy rail use, thus letting water in, that water broke the seal on hte cap construction causeing delam underfoot, about 3 weeks later i landed backseat off a rail and popped the other side, the core cracked. i skied it for another 2 hours, fell like every trick though....so i brushed up on my follow cam skills