<< I called the rebuild > shop and they said that the pinblock to be planed and > that it was common for a pinblock to 'drop' a bit. > I've not experienced that yet in my 4 years as a tech. >> The only times I have seen that in the last 30 years has been a result of incredibly poorly installed blocks, or blocks that had had the tuning pins driven in without support,(pushing the bottom lamination down). Also, if the crack is parallel to the ribs, it is not a crack, it is a rib separation. If this is a new soundboard, somebody is in trouble. Regards, Ed Foote RPT http://www.uk-piano.org/edfoote/index.html www.uk-piano.org/edfoote/well_tempered_piano.html
This PTG archive page provided courtesy of Moy Piano Service, LLC