Michael, The dual-system for the SAT is effective onlt if you use it right. And the way to do it is to pretend you have two (2) not one(1) pianos you're tuning. What I do *(most of the time ) is to go is to take the readings on F3,A4,&65 AND laod that information into pare 1.Then turn the machine off... and then turn it back on.... Then I go back and find the fiist wire trichord above F3 and get the partial inn the 6th 8va of it, then transcribe that setting to F6 and then repaeat the A&C settings yor prevciousily ascribed to Page ! and then load these new settings on to Page 2 and use page 1 above the break and page 2 below or reverse it if necessary..... heck.... call me 804 744-5645 Tom Cobble RPT
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