Well I thought I'd delay cutting the j-stiffeners, but you need them so I started by first trimming the cutout off one end to see how it would go. I used a drill for the radius.
I started to cut to length and trim the fuselage stiffeners, but I soon discovered I didn't trust the cutout info on drawing because it is labled "Aft, Upper" and there is a note that says "trim to fit". I did trim one end using a drill to make the radius and clippers to cut out the waste.
