so thats a confirmed no. Youre right, there should be no bending motion here, but there ARE however significant pulling forces. the spring working in one dirrection, and the backpressure in the other direction. And with so little tread and repeated heatcycling i have no difficulty seeing this happend. They may "all" very well be "checked" before shipping, but this one clearly was not. Human error i guess. They happen all the time and there is no workaround for it. Exept replacing them with machines that is..