Greetings List, I am wanting to try a few slightly thicker strings for my fourth course. I've consulted the experts so am comfortable with tension, etc, but am unable to try a few of them due to a too narrow pair of holes for this course at the bridge. Is there some foolproof way to slightly widen the holes without any negative ramifications? Suggestions on tools, technique and if I should just take it to a luthier are welcomed. Thank you!
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