knoback wrote:It's always something isn't it? Mine are not on the verge of failure, so I think the 'even a single use' thing is over the top. However there are some changes there. There is a black crust of aluminum oxide where the tooth on the pinkie rest meshes - so is this corrosion due to the two different metals in contact or wear? I'm going to try some axle grease until petzl comes up with something. Thanks again for the heads-up.