<html> Hi Victor,                  A healthy saw kerf half way through the rail, at the top of the crown, of the warp.Two kerfs, from the underside about 6" on either side of the crown kerf.  Shim the lower kerfs to straighten the frame.  Then bed the frame in the traditional manner. Warped frames have a nasty way of moving with humidity changes, the high side saw kerks, helps to stop any warping upward movement if they are left open. Regards Roger At 07:41 AM 2/11/02 -0500, you wrote: >Heelo all, > >I need your help in deciding what to do with a Howard #550 (Kawai) Ser# >2905365. >They key frame is warped upwards at the center of the front rail. I am not >sure if the balance area or the back part of the4 frame is also warped. Did >not get the chance to look at it; and could not really figure out how to do >it in a small apartment. > >What is the best remedy. > >Thanks > >Regards. > >Victor Belanger >Somerville, MA > </html>