List, Thank you all for your recent help with the fast repetition problem on a Yamaha MX100II Diskclavier. Those of you who responded gave some excellent suggestions that were confirmed by Steve Pearson from Yamaha. The long and the short of it is ... problem solved and customer is VERY happy! She declares that it was never as good as it is now. In the future I will pay much closer attention to the fit of the keys. I thought, initially, that the balance rail hole and bushing were good but that is what finally cured the problem. To top things off the unit has a really cool self diagnostic that tested each key untill the very last one was corrected. Neat machine! Greg --
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