<html> Hi Gerald,                  A piano of this kind of quality deserves a new set of shanks.  Wally Brooks has a perfect fit replacement, If you are thinking of replacing the hammers at the same time.  I highly recommend the Abel Lites with Mahog moldings. They are a little lighter than the old originals,  but the heavier touch on the older Heintzman's, this will be a bonus. we rebuild several heintzman grands a year. Hope this helps Roger At 10:24 PM 3/13/02 -0600, you wrote: >All the rollers on my hammers are flattened and/or grooved. Is this a >serious problem?  Is there a fix besides replacement?  This is my own piano >(Heintzman Baby Grand) that I'm working on as a hobby. >Thanks, >Gerald > </html>