Match drilled HS-609PP rear spar reinforcement bars to HS-603PP spar channels. Also match drilled the HS-412PP and HS-413PP elevator hinge brackets to the rear spar. Since the HS-412PP brackets only have 2 holes, using only 1 cleco while drilling the other hole would not suffice - had to use additional clamps to hold these brackets in place.
HS-412PP Elevator Hinge Brackets - Clamped in position
