<html> <body> <blockquote type=cite class=cite cite="">So, I got back to this M&H and got to check out all the different theories.</blockquote>KEY DIP: There's plenty. Anymore and there will be too much., so it's not that. BUTT FELTS: They are a bit compacted, I tried fluffing one out, to give it a bit more thickness temporarily just to see if that helped. It did. Thanks Marcel! (See you in Rochester?) Rechecked my original idea, that is, hammer pinning. There is practically no resistance in the pinning. Repining with a normal degree of resistance also helped, as did strengthening the hammer return spring (but not too much). As much as I'd have liked to find a smoking gun, it looks like one of those cases where small changes to a few different areas will make the most difference- thicker butt felts, correct hammer flange pinning, stronger return springs. For the piano's owner, dental work had just trumped piano work so it will likely be a few months before I actually do the work. Thanks to all for the input. Aaron <x-sigsep></x-sigsep> ------------------------------------------ Aaron Bousel Registered Piano Technician, Piano Technicians Guild abousel@comcast.net (413) 253-3846 (voice & fax) </body> </html>