Hi Matt, No it is not normal for wire sizes to change that much although I have done it one a few really, really badly scaled pianos. When the string gets too long too fast. It is very likely that this piano may not have dog legs bends in the bridges at the plate breaks. A very common rescaling problem. Without question the bass scale can be improved to provide a bigger bass than the original. For your tuning fee I will rescale the piano for you if you send me the data. Lots of luck. Newton
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