You could try the Italian to English thread converters from Ceeway at the bottom of this page: http://www.framebuilding.com/Sundry-Components.htm
Yes you could but you still have to braze these in, probably just as easy and cheap to have a new shell brazed in if it comes down to this option.
:)
@Carlos started
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Yes you could but you still have to braze these in, probably just as easy and cheap to have a new shell brazed in if it comes down to this option.
:)