zoom bottoms out after a while ... hasnt happened yet on my pair, but i rotate my ballin kicks. it may also be your feet gettin used to how the insole feels. i had to go a complet size down from m y normal 10.5 in these, the 9.5 are hard to get on but have that lockdown feel of the ZL2s i was looking for, so it was definitely worth it. its a way more responsive shoe, the articulated arch is also closer to my own, i dont know why they run so big, but im happy i tried different sizes to get the one that was right. as far as weight of the shoe, thats seems a little nit picky. I think that ken link has done well in the last 12 months the ZK2 and the ZL4 are AMAZING peices of footwear. the weight isnt an issue and im only 5'8" 155 so, all you guys bigger need to hit up a gym or something.