After my own testing decided to omit the stiching, like said before can always add after the fact. Chose to cover the vertical using two pieces since I was fighting the curves. So reading the book on the trailing edge of the vertical where a seam is do you wrap around and glue to 180 degrees of tube or a 2 inch overlap? Blue is 2 inches brown is 180 degrees. Promise I can reed just finding the BAF supplied manual a little confusing. Picture is sideways maybe somebody can teach me how to rotate them also.