Hi Ken, In hind sight my use of the impact lever was most likely flawed causing me to have sporadic results. If memory serves me right I would get lazy and lean on the handle to bring the pitch down after impact took the string above pitch. In choosing to use a regular hammer some of my bad habits were overcome due to a change in technique required (11 to 1 o'clock ) in placement of the handle was the same but my body was different. With all the prior use of impact technique it was not easy to do the slow pull that you describe and find myself using impact on almost all pianos with exception of the high treble. Even with the Wand style level that is my main lever (since SATlll and auto advance) impact is the fastest method for me as tiny movements of the pin up in pitch are easier for me to achieve. The design of my BIG T for use in tuning grands comes from by desire to use true impact without side pressures being exerted on the tuning pin causing the pin to be slightly bent in the process
This PTG archive page provided courtesy of Moy Piano Service, LLC