Took LE ribs off main spar. Measured & drilled pilot holes in both main spar corners. Holes were centered on 2" up from spar & 3/4" in from rib flange. Enlarged holes w/Unibit to 5/8" diameter. These holes are for plastic tubing for wiring. Deburred holes on both sides w/Unibit drill. Centered holes in rib 8A on 1 1/2" up from spar & 3/4" in from rib flange.
