Kevin came by this afternoon and so I put him to work. We re-arranged the shop to allow access to both sides of my workbench/C-frame table and set up the C-frame to dimple the left tank skin. We did all the -3 rivet holes for the ribs, stiffeners and tank drain. The skin is rather awkward to maneuver, so it was good having a helper. Many swings of the hammer later we had a good set of dimples.