Clecoed Rear spar doubler to the rear spar. Squeezed 2 c-sunk rivet in the middle of the spar. Decided not to rivet AN470AD4-6 Rivet since I didn't have any. Went to Chandelle aviation to see if i can get some but he didn't have many, so i ordered some from vans along with longer trim tab push rods. Squeezed HS-912 brackets. Placed squeezer in the vise and used foot control to rivet worked out very well.