This lesson shows you how to get powerful feedback on the bend/tilt/massage phase of the Move and Massage technique and know if you are doing it too much. You also learn how to adjust for different NSL lengths.
Phase 1 - Apply force and confirmn a clean unison
Phase 2 - Remove force and confirm unison is still clean
Phase 3 - Test blow or bend test. Unison should remain clean.
Addition - Phase 3 can also be the Customer Test where the customer plays the piano for five minutes, the piano goes out of tune and you get fired but never find out. You do not want that, so learn how to use your phases.
Are you looking for some more theory?
This book has you covered!