HI Bill We restring the top two treble sections in some of our performance pianos every two years or so depending on the amount of breakage. The tenor and bass section will need restring after ten years more or less depending on what level you are trying to maintain. On the other hand a piano that is not performed on such as a home or practice room for example might not ever need to be restrung until it gets rebuilt. You mention the tuning pins as " 0 ". Do you mean one 0? That is to say .276 or so? I had always thougth that Steinway used 00 pins in new pianos, that is .282 In any case if the pins are too loose I would repin when you restring. Now just for fun I want to mention what I like to do with school pianos when I rein one or two problem pins. I put in pin of a different color. That is if the old pins are blue I put a plated pin and if the old pin is plated I put in a blue pin. That way when I tune the thing later I know right away if I have had any trouble with tuning pins. I would not do this on new stuff. Phil Sloffer Indiana University School of Music psloffer@ucs.indiana.edu
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