All, Can I throw something else into the mix? Last year I posted a similar problem on CAUT and got a lot of the same advice. Lot's of good advice, great advice, for the "normal" or typical resolution of double striking. However, nothing solved it completely. It was the same make as Britney's piano, and I tried everything. The real problem seemed to be in the design, or at least the implementation of it, whether right or wrong. (i.e. The design may have been good but the gorrillas in the factory missed it.) If the hammer assembly doesn't tend to "lean" (for lack of a better word) back so that the center of gravity favors a return, it sometimes ends up double bouncing more. The Chinese pianos use the Schwander type return spring, which is considerably less strong than the American spring. The weaker spring can't overcome too much of this gravity thing. If the hammer isn't raked enough, and/or if the hammer assembly/action (balance) set up is not favoring a return this problem seems to be exacerbated. On my piano strengthening the return spring helped, but there was something else. With my piano I experimented by physically leaning the piano forward (toward the player, slightly) and the problem went away. So... what I ended up doing is "Turbocharging" the piano a la Jack Wyatt. I won't post this exact procedure here since Jack might not like that, but maybe it's been posted before. It consists of tilting the action forward (out, spacer washers) then reregulating blow, etc. FWIW, that's what did it in my case.. Jim Busby
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