Hello Sy and other members, I agree with Rick Florence that Glen Hart's tool works well for Butterfly type rep springs although I've tried bent mute wires and other things like that and got them to work fine. I adjust them with the action facing me and disengage the spring to either lift up for more tension or push down for less. I do this operation quickly when I start to regulate to make sure there is some tension to help support the weight of the hammer and shank, then when you get to the point of setting the repitition lever height you can really control it eliminating the possibility of lost motion between the top of the jack and the knuckle. I'm sure this is a factor in better repitition speed. This is why I prefer the butterfly type spring. Doug Hershberger, RPT Disneyland 80 Degrees (Calif.) P.S. I have been quilty of lurking also but when I did post a question about purposeful de-travelling of Steinway hammers for spacing purposes I got a very poor response. I expected more of a discussion about hammers travelling the shortest distance or loss of power etc. or maybe why a company such as Steinway would take the position of, "it is better to look good than to be right" if that is in fact what they do. Just wondering.
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