Overly long bore. Install properly bored hammers. Newton Richard Brekne wrote: > > Suspect.... > > a Petrof 235 grand...serial 430019. > > --Hammers and shanks have been changed at some point, > --regulates at present with drop screws way up... have had to grind > several in order to keep from breaking them on the underside of the pin > block. > --Letoff button has plenty of room to go up, but its on the high side. > --a 90 degree rake and shank parallel to strings would necessitate > shortning the borelength... hmmmm. > --present rake is 90 degrees, borelengths of 56 / 63 > > So.... grin... Name That Problem !! :) > > -- > Richard Brekne > RPT, N.P.T.F. > Bergen, Norway > mailto:rbrekne@broadpark.no > http://home.broadpark.no/~rbrekne/ricmain.html
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