I ordered SS brake lines and picked up some ATE Super Blue the other day. But I have some concerns now with the longevity of the lines. Stainless Steel exhibits work hardening. This means that the material becomes harder as it is stressed beyond its yield point. My question then, is work hardening a concern with stainless steel brake lines? Along the same lines, how many miles have people put on SS lines? and how many track days? Since the lines themselves are relatively cheap, I don't care if they become a wear item. But I don't want to be going one bill plus and have a line failure. That would definately not be fun.