Hi, I have a Kawai KL-703, serial number 1150442, which has a problem with loose jack pinning, to the point that it is difficult to regulate lost motion and they can wobble sideways enough to hit the neighbor hammer. Anyone have any experience rebushing plastic parts or am I better off replacing the whippens? Also, a minor thing, is there any source for the hinges that attach the top of the music desk to the front panel? Kawai parts does not have them and dont know when and if they will.
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