De-burred all holes and clecoed in place making sure I had center line marked so I can use it in landing gear alignment. Cut out for PF-188 on both sides and clecoed the back corners in place. Riveted the center line with 613 rivets. Ran out of 613 rivets as there were only 54 and needed 84 to complete the 613 rivets. Riveted the area requiring 414 rivets and stop there for the night. Tomorrow I will finish the 410 rivets and align the landing gear parts and drill bolts holes for them. Will order 613 rivets tomorrow.