Originally Posted by
Nessism
Replacing a BB isn't trivial. Personally, if by chance the BB isn't cracked I'd leave the chain stay alone and go straight to a repaint. Builders dimple chain stays all the time and the indentations they leave are larger than that dent shown.
True, it isn't trivial - but if the framebuilder says he'll do it, it is the framebuilder's non-trivial issue to grind the thing off the tubes. For the OP, it's just a case of paying for the labor, however much it may be.
Those chainstay dents could be filled with silver, if the high points are not that obtrusive.
-Kurt