Originally Posted by
Reynolds 531
Easily fixed. Don't worry.
Many ways to fix it, some will mar the chrome only very slightly (I'm thinking Mini MIG or TIG microtorch from the inside).
Thinking about it more I would Mig from the inside.
Your local craftsman can advise you.
That's going to need to be reamed after any repair. Running a cutting tool over weld material sucks.
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My bikes: '81 Trek 957, '83 Trek 720, '84 Trek 770, '85 Centurion Cinelli