I have been procrastinating on riveting on the forward top skin. However, I think I have done everything I possibly can in the instrument bays and with the wiring that would be covered up when I do. Nonetheless I'm still procrastinating about riveting on the skin thinking I may have forgotten something and working from underneath the panel is not very appealing. So the question is, what did you forget to do when you had the top skin off yet that you wished you had done while you did???