Did they crack under the brake bridge mount? Wondering if they were rubbing around / vibrating against the mount. That might score the metal over time. But still. Not expected.
I had something similar happen with my steel GB mudguards. The aluminium PDWs will be even worse as the metal will quickly work harden as they rattle around (as you noted).
Gunmetal PDWs?
Did they crack under the brake bridge mount? Wondering if they were rubbing around / vibrating against the mount. That might score the metal over time. But still. Not expected.
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