Any proven methods for shank bore reduction on a SS Berg? Yup, I know, new neck cork, plumber's tape etc, etc, non of which allows me to change quickly to other mpcs all of which have an almost common bore size. New neck? Stirling Super 20, not easy. Another mpc? I like this one(vintage). Thanks guys, I'm sure there's a fix somewhere in this pool of extraordinary talent that is SOTW.
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