When the hammer top hits all strings of one note at the same time, the maximum power is transferred. To make the adjustment, the action must have been finely regulated and the piano freshly tuned. The cheekblocks are better in place to make sure the action is at the correct position. This hammer to string mating process is learned from Mr. Eric Schandall. 

This is a figured-out-by-self note after all sorts of failures and damages. I do wish to learn how factories and other workshops offset the wires by the plate strut. What damages have been made? All that one can think of.
(German practice on the first paragraph: Diese Methode habe ich selbst herausgefunden. Ich möchte gerne erfahren was die Manufakturen und die andere Werkstätten machen. Ich habe so viele Teile zerstört, die man sich vorstellen kann.)