Positioned forward rib 405 on front spar and drilled holes, then deburred. Cleaned up and sanded all scratches on all ribs and spars, then rubbed a Scotchbrite pad over all pieces. Used Scotchbrite wheel on edges of VS skin. Cleaned all pieces and the inside of the skin with lacquer thinner. Sprayed all pieces with acid etcher and then washed off with water. Primed all pieces.
