Hammer spring replacement

[Clyde Hollinger]

Friends,

Today I brought home a hammer spring rail which needs all the springs
replaced.  It is from a 1980 Everett studio piano.  I'm sure information
on how to do this is published somewhere.  Could someone please steer me
in the right direction?

Also, I was surprised that my magnet would not pick up springs that had
broken off in the action.  I thought these springs were made of steel. 
What _are_ they made of?

Regards,
Clyde Hollinger