I clamped W-707E to the rear spar and backdrilled and clecoed it to the spar. I traced the outline of the aileron pushrod hole and used a unibit to drill it to rough size. I then used a sanding drum on my Dremel to finish it to size. The W-707D & G doubler plates got clecoed and final drilled to the rear spar. Everything came apart for deburring and preparation for priming.