I realized that I drilled the W919 Strip with a #12 drill instead of the #19. Oops. The larger hole would likely be ok since platenuts go here... but I decided to remake the Joiner Strip to play it safe. Wasted 75 mins. Continuing with the Attach Brackets, six of seven were countersunk for platenuts then deburred, cleaned and primed. Platenuts were the riveted onto the Brackets. The most inboard Bracket does not get platenuts. the Tank-> Fuselage End Support Angle was clecoed in place on the tank.