After I realized in section 29 that I had put the cover plates on wrong (the picture is very difficult to tell). This required me to drill out about 30 rivets and then reset the cover plate. Not a big deal but sure would have been nice to know this ahead of time. I hope this post helps someone avoid this mistake in their own build. Turns out this is a very common mistake and a lot of builders (on Van's recommendation) leave the mistake alone.