I tried a variation on the "plug all the holes" method. On an old upright I routed out the entire sections of drilled pinblock to the depth of the size pinblock I was going to use. I then carefully cut individual pieces of block to fit in the routed sections. Then drilled for the tuning pin holes in the usual fashion. This would eliminate the possibility of plugged holes loosening and turning with expansion and contraction of the old pinblock, as the separate pieces are essentially locked in place. I assume the repair held up, but I lost track of the piano and couldn't follow up. The amount of work necessary to accomplish this may be nearly the same as replacing the whole piece. At the time I thought seemed easier. I've never tried since. David Denison RPT
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