Hi, Well, I just tuned a small Heintzman grand with the feature. I felt it gave me no more trouble than a more traditional pinning style. Regards, Don Rose, B.Mus., A.M.U.S., A.MUS., R.P.T. Non calor sed umor est qui nobis incommodat mailto:pianotuna at yahoo.com http://www.donrose.ca/ 3004 Grant Rd. REGINA, SK, S4S 5G7 306-539-0716
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