Over about 5 days with an hour or two each day I was able to assemble the right and left flaps. Some tight spaces riveting the spar flange in between the trailing edges, but all doable. Also, instead of back riveting the aft 2 rivets in the ribs per the instructions, I was able to squeeze them since the back riveting tools head couldn't fit between the openings. did the trailing edge with adhesive just like the rudder and it came out near flawless. a very few minor pushes to make it perfectly straight (or so it appears to me)