Peel as much of the original paper spine inlay from the original spine cloth as possible. If the paper is well adhered to the cloth, don’t force it off the spine cloth. Trim the frayed edges with a straight edge and X-acto knife, taking care not to remove any of the letters or design. Lay the original spine against the new book cloth spine to check for a proper fit. The original spine should not extend into the hinge area as it will add bulk that will inhibit the cover…