Theres one other prossess that I used and it worked out quite well for my Sopwith Pup. I took a piece of lite ply and rapped it with thread then spaced the thread the distance I wanted the stitches to be. Then I took some of that adheasive tape for those cheep storm window you put inside your house. and ran strips of it accross the thread. then cut the thread and tape to the width of the stitching for the ribs. Then I would apply the tape with the stitches on it to the ribs. Then I would peal off the backing of the tape (wich is double sided tape) apply my pink tape over it then seal. Perfect stitches every time and evenly spaced on each rib. Don't have to wait for the glue to dry just cover and seal with dope, or paint , or what ever you choose.