On Mon, 29 Sep 2003 22:40:54 -0400, E & V Willson
may have said:

How do you "work it the other way" and make the valve hole smaller?
Is there an adapter ?

Yup.

http://www.loosescrews.com/index.cgi...em_id=CU-87685

Probably available at your lbs as well. (I've also seen them in brass
once or twice.)

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