Final drilled the trailing edge. After researching a few techniques I decided to go with a stick that I cut a 84 degree angle on one end to help align the drill perpendicular to the chord line. I laid the runner flat on the table and aligned the drill with the stick to keep it parallel. It seemed to work pretty good. I continued to final drill the rest of the skins. I ordered the 3M F9460PC 1/2" VHB tape as well in preparation for final assembly of the trailing edge later in the week.