Alan Smith I like when you talk steel. I came from town which had brotherd/sistered Sheffield.
And steel grade will be different between batches yet along manufacturers.
I am sceptical about Mizuno replication cause a think the reactor wall size and content can be a factor.
Everything Japanese do is very precise. It is a fine art. And it scares me. You can't build a business if you need.a dynasty of nickel mesh rubbers.
Jed and Mizuno should help the community by supplying all the parts.
All these stories about passing around 'good/lucky' platinum rods which work. It is not engineering it is a witch craft at best.