Hi Don, I never strip mute the entire piano. I thought I made that clear in my first post. Also, I do not, as you say, miss the opportunity to hear how the lower treble unison is doing after it has had time to settle. I check it. I just don't tune the upper octave note to the lower open unison. When I first learned to tune 60 years ago, I did it that way, but I later learned a better way. I have tried it both ways many many times, and I always find that I get better and more reliable results by tuning single string to single string for the very same reasons we discussed several days ago at the beginning of this subject. I alwasy go back and check everything, and I usually end up tweaking several unisons as well as a few octaves. I don't just whiz through and then leave it. Sincerely, Jim Ellis
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