My MO has simply been as little as possible to make the pin "tunable". The top ofvthe hole us the primary problem (IME), and each application (post curing) builds upon the previous one, making it cumulative. ...
I have had some good results and not so good results with CA glue. On very old pianos, or there's no plan to restring a piano that won't hold a tune, I'll try CA glue. I've had experience that sometimes ...
Yes the dense asian bushings are a problem but for older american pianos I have salvaged more than 6 that were deemed untunable. I this the best option: no but sometimes there is no budget for a new ...
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