Wings, my favorite part. Most of the ribs are the same profile so it was disappointing to see how poorly matched the die-cut ribs are. I stacked all the matching ribs and pinned them together. Using a sanding block I made them all the same profile. Once again, some of the notches for the spars were poorly cut so the worst ones were CA glued in place and then re-cut. After a lot of fitting and sanding the top wing is pinned down and ready to glue. I must've built a pretty lumpy looking airplane when I was a boy because I don't remember it taking this much time to make sure the pieces all fit properly.