Ordinarily, I would agree with you on that point Brian, but not in this individual case. All of the "repairs" that I've seen look like the one that you show. They are much wider than this one. This one doesn't look like it shows the thinning that the precessing drill bit normally does nor the typical "wedge" shape hole that necessitates the wide milled cut. So unless the "drill runout" was nothing more than a tiny crack that might have been milled at a later date I have a hard time seeing this one as runout. It could be a millout of a crack that appeared later that was done during a rebuild.
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