Deburred, cleaned edges, and dimpled all parts for the Left Elevator and some parts for the Right Elevator. Takes sooooooooo long to do this!!!
Started looking at the Trim Tab process. Roughly clecoed all of it together to look for "gotchas."
Spoke with Cleaveland Tools. They sent a picture of the Countersink Tool! Perfect! Finally got it back together correctly.
Made a countersink backer using a piece of aluminum angle. Then I knocked out all the Countersinks on the short spar on the Left Elevator. Worked perfect!