The alignment of levers & hammer rollers is, like all adjustable parameters in the regulation sequence**, essential to optimum function – which is in itself a prerequisite for the piano’s voicing.

See how bad most of these levers & hammers are, as evidenced by the black carbon lubricant markings on the roller leathers:

(Needless to say, sorting this lot needed some serious lever travelling)….

Lever-Roller Alignment

** Later in 2015, I will be publishing my Regulation Sequence for in-situ concert preparation.