<html><head><style type="text/css"></style></head><body><div style="font-family:times new roman, new york, times, serif;font-size:12pt"><DIV>Has anyone done a study of the negative effects that occur to a tuning pin or the pinblock while tuning? I service a new-ish 7' Bosendorfer for a Boeing engineer, who is a hobbist with older uprights and we've been discussing the rigors the pin endures while being twisted and flexed, and also the affect on the pinblock.</DIV> <DIV> </DIV> <DIV>Dave Davis, RPT</DIV> <DIV>Renton, WA</DIV></div></body></html>