Solve Excessive Friction:

Friction is a necessary and useful component of piano action mechanics. Too much causes trouble in one direction and too little, trouble in the other. The best balance optimizes performance and the player's control of tone. How much is just right and how is it measured? I have found that for the sum of keys and top action, 17 grams gives the ideal balance between control and freedom, stability and repetition. The fastest and most effective way to observe and calculate this sum employs David Stanwood's concept of balanceweight.