Hello Rogerio, I have used an impact tuning lever for a few years now, and I like it a lot! On many vertical pianos, particularly those with tight tuning pins, it works very well. It is also great for pitch raises. I have found that it takes a bit of getting used to, but the trick is to let the weight of the hammer do the work, using your wrist to give it a quick flip. I do carry a regular extension lever also. The impact lever doesn't work well on grands, because of the angle. Does anybody else on-list have ideas? Ray Irving
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