Tonight was more of the same. Continued riveting nutplates and then started working on the other stiffiner.
I made the stiffiners such as to be about 13.25 inches apart. The tanks have 1/8 x 1 inch angle welded on each end for securing to the aircraft. That puts me close to the centerline of the angles for securing.
If I never get a smoke tank then I can use it to secure a "tool box" to put stuff in or for tie downs for a net or ???? Either way....now was the time to do it.