I think I can see a bend in the right chainstay around the brake bridge.
If you put a straightedge against it (ruler) it would make it clearer.
Sorry I don't have any suggestions for remedies or causes.
@provenrad started
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I think I can see a bend in the right chainstay around the brake bridge.
If you put a straightedge against it (ruler) it would make it clearer.
Sorry I don't have any suggestions for remedies or causes.