Hammer bore distance update

[Cal Munson]

Thanks List for your responses.  The piano is a Steinway A and the  
bore distance, I am told should be 46 mm
My own 'A' has an ideal bore distance of roughly 44 with some  
sections at 44.5 and others at 43.5

The hammers in question, Renner Blues, have been drilled with a bore  
distance of 49 mm (center of hole to striking surface of hammer) so  
they are 5 mm off.   The old hammers with shanks were sent as samples  
so it is a mystery........ However,  I don't see a downside to having  
the hole filled and then re-drilling.   But I have not done it  
before... Anyone?

Cal Munson