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Hi. I have a Cremona nickelodeon and I just found that the pin block
pulled away from the frame.  I am thinking of drilling out the four
lag bolt holes and using nuts and bolts to hold it back in place as
I glue it.  The widest part of the gap is in the center: it is about
3/16" and goes down to about 1/16" on both sides.

If I do this will I have to release all the tension on the strings
before pulling it back with clamps and bolts?  Also, can I just leave
the gap where it is and use the nuts and bolts so it doesn't move any
more than it has already?  Thank you very much.

Phil Corso