Drilled the 4 holes in the cover plate attachment for F-824B with #27 drill bit since I couldn't find the #28 drill. Only .004 differences. Then drilled the nut plate holes associated with F-824B. Marked and trimmed the right side "triangle" piece of skin from the F-1037R but before doing that I clamped and drilled the anchor brackets for the rear seat belts attaching them to the longerons.
Then started the disassemble of the tail section so I can debur, dimple and then prime... oh boy...