We have a client that produces large (108 x 84 inches) CNC cut leather hide mosaics. each piece is dyed and still has the hair on it. the pieces are mounted on some type of polyester webbing. what I have done before is mounting the piece onto Gator board with Super77 spray adhesive and then sewing using 20lbs monofilament in a 10-12 inch grid pattern. That is mounted to stretcher bar and wrapped with a floater frame. The edges and corners have started to peel up. Is there any advice on how to tackle this type of piece that would make a permanent solution? any advice on glues or sewing technique would be helpful. It has to withstand temperature changes from being stored in a warehouse to being hung in an office building.