Changing Steinway(revisited)

[Jon Page]

Robin,
Since increased repetition is requested and the piano is regulated and
engineered with German excellence then the only other factors which come to
mind are center pinning and easing the key pins.

At slight drag at the balance rail bushing can slow things up but the elusive
friction is found in the balance rail hole at the bottom of the key.

Regards,

Jon Page

PS  Sorry I did not include previous text, all was deleted.