John Armstrong came over today to give me some guidance on sealing the wing tank parts. Found that I hadn't dimpled well enough and John determined that I didn't have my DRDT-2 set properly. He corrected this and the stiffeners were redimpled. There was a noticable difference in the new dimples versus the old. Got all the stiffeners clecoed with Proseal and part of them caulked around the edges.