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Hello,
I bought a Schilke Helleberg II when they first came out (the stamping of the lettering on mine is actually
a bit sloppy). I have not seen the current SH II's. Has the outside contour or original specs on this
model changed at all? The Schilke webpage lists only the cup diameter (32.76 mm) but not the drill size.
Is this information TOP SECRET?

.323" / 8.2 mm. The size of a letter P drill bit.

LJV wrote:Once upon a time, mouthpiece makers expected players to adjust the throat of mouthpieces.
...

I have never heard that. Where did you get that information?