Caliper too low? gripping the 'spokes' of the disc and only the inside part of the disc edge ?
Add flat washers under the caliper around post mount bolts. So as to bring it outward ..
Out here we suggest a lot of gentle stops for break in /pad bedding, not a few high speed agressive stops..
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Last edited by fietsbob; 03-30-19 at 08:58 AM.