Cut spar cutout holes in left and right side skins. Trial fit L/H side skin. MAJOR STUFFUP!!! The longerons have been drilled in the wrong place. Page 23.02 Fig 1 shows the F-1234-L template 45.25" from the AFT END of the longeron. I drilled with the fwd edge of the template at the "end of twist and open. 12 11/16 from front of longeron...Wrong!! This leaves the longerons about 1/2" too far forward. I will order more longeron material tommorow.