The first step was to reattach the text block. I lined the pages up at the foredge, and trimmed approximately one millimeter off the spine with a guillotine. Next I added a scrap piece of paper to the top and bottom of the text block for protection, lined the pages up at the spine, rebound the text block as a perfect binding with PVA, and dried under weight. Then I removed the scrap pieces of paper and reattached the text block to the case using PVA on the spine. I dried the book closed, under weight.
Because of the previous trim on the spine, the text block was just a little too short for the case. To correct this I simply took the book back to the guillotine and trimmed all three edges to fit. For this final trim, I kept the book between thin boards, so that the guillotine would not mark the cover.
This is the completed repair (Winter 2009).