Thank you, Richard, Isaac, Jim B. With only one Yamaha vertical on my list that's doing this particular thing, my statistics are poor. Nevertheless, in light of what all of you have said, I'll take another look at it next time I am over there, which will be in about a month. I can understand why you want a fix, not a re-design. At the same time, I dislike the idea of weak jack springs. And on grands, I personally like the repetition spring strong enough that I can just barely feel the kick when I release slowly and the hammer comes out of check, but not enough to make it bobble. That's just my preference. Some others will disagree. I want to make sure the jack never gets hung up in front of the knuckle. Thanks again. Jim Ellis
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