Sy: As you mentioned, if we "float", the bass and upper treble will need adjusting. If we "fork" (can I say that on the list?), we need to tune primarily the middle of the piano. Given that we want the piano to be at A440 as much as possible, I am in favor of the fork. One suggestion to get around this problem is to tune the piano in the spring and fall. The piano piano "float" up or down during the summer and winter, but when you get there, during the more stable months, you won't have to work as much. Willem Blees RPT St. Louis.
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