The Half Blow and its correct adjustment are vital to tonal control and evenness of touch weight (also this latter is primarily determined by appropriate Weighing Out of the keys – on this, more anon).

On sensible instruments (alas, not Steinways!) (though I did try to pursuade them otherwise…), spoons are fitted to the damper lift bodies for precise adjustment of individual key-damper interaction:

Boesendorfer damper lift spoons

The required tools:

The lift transfer block & the spoon bender…

Transfer Block & Spoon Bender