When setting up the frames and stringers, something came to light that was not mentioned in the assembly drawings or manual, and that is that the U channel stringers have been made with a big end / small end so that end lapping of them instead of butt joining them is possible, so with this now discovered I decided to end lap the stringers that reqired it, over a frame station.
I also decided that instead of using the Avex 412 rivets specified in the drawings for holding the stringers to the frames, that I will use the countersunk cherrymax CR3212-4-3 commercial aviation grade rivets.
