New hammers on a Steinway M

[Jon Page]

Before pumping in stiffening agents, check the hammer alignment
to the string.  Lift the hammer to the string and measure the angle.
It should be 90 degrees or a little bit understriking (strike point is
more towards the front shoulder) to accommodate for hammer wear.

I have taken on a piano which formally was of the "S-Tech" hype
and the hammers are severely understriking, more hardener only
aggravated the situation.

A good filing alleviated some of the problem but nothing short of
hanging hammers of the proper length and inclination to the shanks
will do.

So check that aspect before plundering forwards.
-- 

Regards,

Jon Page