Centering the jacks in the middle of the repetition lever is an important step in the regulation process. Almost all actions will have at...

By Gregory Cheng, RPT When I was a young technician, one of my first jobs was working in a shop rebuilding pianos and prepping floor...

Learn how to get an accurate measurement of key dip.

Hammers that travel in a straight, vertical plane are critical for correct function and tone.