hmmmm, let me see
so SW1 is cut to 40 & 23degr ok , how does that make the frame lean 71degr .i dont get it but i do see how the length is different when something is at an angle .... but the book shows the length & not the hight of the frame on page 46 but i get that so thats fine however im still not sure about the angels.
Cheers
Samy