Old 03-12-21, 01:02 PM
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Join Date: Mar 2015
Location: San Francisco
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Bikes: 2000 Santana Sovereign SE; 2005 Co-Motion Speedster; Kona Kilauea with various dorky commuter accouterments; Mercier Kilo TT fixie; Burley Fladbed trailer for groceries

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OP here. Just to add: After swapping in the new disc donut, the bump-bump-bump was gone when I bedded in the sanded disc and pads.
sapporoguy is offline