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I have repaired many verticals with pin blocks that have separated from the back posts where there is direct access for getting glue down in between the back posts/fillers and the pin block. (The procedure being: let down tension enough so that the frame can be clamped back together, apply glue and clamp, bore for 3/8" carriage bolts, install them, bring piano back up to pitch). But two factors differ here: 1) the decorative strip atop the back post ends has stayed firmly glued to the pin block. It is a rather thick piece and I note that the plate lag screws almost follow the glue joint. 2) the separation does not extend into the bass, which will complicate getting that piece loose.
My dilemma is: must I rip the strip covering the back post ends loose, in order to get glue in everywhere? Or is it sufficient just to replace the six lag screws with carriage bolts as I have on occasion run across.
I apologize for the poor lighting
Bill Maxim, RPT
Columbia SC
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