Congrats: I finished squeezing all the rivets and the horizontal stabalizer is complete. I noticed the drawing calls out not riventing 10 locations on top on the two inboard ribs because these will be used later. Its not mentioned in the plan. I hope other builders notice. I put in the four pulled (pop) rivets to hold rear spar to mid rib. All done. Squeezing revits is the funnest job. Simple safe and easy.