Oh it definitely wasn't rust. All were just plain broken parts that weren't strong enough for the task at hand. I think what gets them is the torque of cranking in a 16oz lead and skateboard flasher, which is the standard issue setup in the lower Columbia. Both those and the Accudepths had parts that sheared/broke.Fair enough. Was just wondering if they failed due to rust/corrosion or some other issue. Sounds like maybe they're just plain not as good as the Shimano.